DFGĆ100 AND DFGĆ200 SERIES CONVECTION OVEN SERVICE AND REPAIR MANUAL BLODGETT OVEN COMPANY www.blodgett.com 44 Lakeside Avenue, Burlington, Vermont 05401 USA Telephone (802) 658Ć6600 Fax: (802)864Ć0183 PN 33082 Rev F (7/10) E 2010 - G.S. Blodgett Corporation All rights reserved. Duplication of the information in this manual is prohibited without the consent of the Blodgett Service Department.
TABLE OF CONTENTS 1. INTRODUCTION Oven Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ventilation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1-3 2. OPERATION Manual Controls with ElectroĆMechanical Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Solid State Cook Only . . . . . . . .
TABLE OF CONTENTS Deflector Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electric Igniter (Glow Coil) and Plumbing Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electric Igniter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Thermal Delay Relay Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHAPTER 1 INTRODUCTION
DFGĆ100 and DFGĆ200 OVEN SPECIFICATIONS VENTILATION REQUIREMENTS ELECTRICAL SPECIFICATIONS Canopy Type Exhaust Hood NOTE: Three Phase hookup is not permitted on gas models. The preferred method of ventilation is the use of a mechanically driven, canopy type exhaust hood. The hood should completely cover the unit with an overhang of at least 6" (15 cm) on all sides not adjaĆ cent to a wall. The distance from the floor to the lowĆ er edge of the hood should not exceed 7' (2.1 m).
INTRODUCTION GAS SPECIFICATIONS GAS CONNECTIONS GAS REQUIREMENTS Domestic and General Export installations NOTE: For natural gas meter sizing, consult your local gas company to ensure that your meĆ ter will provide the proper supply. The gas line should be large enough to accommoĆ date the peak demand of all the gas appliances. TABLE 1 reflects a straight line, 50 foot run with no coupling restrictions and no other appliances drawing service.
DFGĆ100 and DFGĆ200 VENTILATION CANOPY TYPE EXHAUST HOOD TRIM COLLAR Ovens that are ordered for underĆhood venting are supplied with a draft diverter. When supplied with a draft diverter, the oven must be installed under a mechanically driven exhaust hood. 1. Remove the trim collar from its shipping posiĆ tion at the rear of the oven. 2. Remove the protective coating from the stainĆ less steel portion of the collar. 1. To install, place the diverter with the open area toward the rear of the oven. 3.
CHAPTER 2 OPERATION
DFGĆ100 and DFGĆ200 MANUAL CONTROLS WITH ELECTROĆMECHANICAL THERMOSTAT NOTE: The following instructions represent the most common controllers. For questions regarding other options call the Blodgett Service Department at (800)331Ć5842. SEQUENCE OF OPERATION - DIAGRAM P/N 17794 REV A Component Reference 5. On a call for heat, the cook thermostat closes sending power to one side of a centrifugal switch (7).
1 2 3 13 5 7 8a 8b 6 4 9 10 12 4 11 1 OPERATION FIGURE 5 2-2
DFGĆ100 and DFGĆ200 SOLID STATE COOK ONLY SEQUENCE OF OPERATION - DIAGRAM P/N 20027 REV A Component Reference ture control board (3) and the ignition control module (8). NOTE: Refer to FIGURE 6 page 2-4 for compoĆ nent locations. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. NOTE: The door switch is located behind the combustion cover and is operated by the cam that is mounted on the right hand hinge pin.
1 2 FIGURE 6 2-4 10 12 5 15 14 7 8 3 11 13 9 6 4 16 OPERATION
DFGĆ100 and DFGĆ200 SOLID STATE COOK & HOLD SEQUENCE OF OPERATION - DIAGRAM P/N 19604 REV A Component Reference tion control module (12) and terminal 7 of a TPDT relay (13). NOTE: Refer to FIGURE 7 page 2-7 for compoĆ nent locations. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. NOTE: The door switch is located behind the combustion cover and is operated by the cam mounted on the right hand hinge pin.
OPERATION 7. If the mode selector switch (1) is set to the Cook & Hold position a circuit is made in the switch between L1, 1 and 4. All of the previousĆ ly mentioned circuitry is active as well as the cook and hold circuit. the circuit to the ignition control module (12). This toggling effect also allows 110VAC to go to the convection blower (10). This cycles the blower on and off every time there is a call from heat from the hold board (8). 8.
11 1 2 3 12 14 2-7 4 16 13 13 6 15a 5 7 15b 18 10 8 17 2 1 9 DFGĆ100 and DFGĆ200 FIGURE 7
OPERATION SOLID STATE DIGITAL SEQUENCE OF OPERATION - DIAGRAM P/N 31981 REV F NOTE: Refer to FIGURE 8 page 2-9 for compoĆ nent locations. Operation 1. Power is applied to terminals L1 and N of the mode selector switch (1). Component Reference 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. MODE SWITCH DOOR SWITCH TIME AND TEMPERATURE CONTROL AXIAL FAN SINGLE SPEED MOTOR CENTRIFUGAL SWITCH PRESSURE SWITCH LANDIS & GYR IGNITION CONTROL 2 SECOND TIMER A & B DUAL SOLENOID GAS VALVE TEMPERATURE PROBE 2.
DFGĆ100 and DFGĆ200 1 5 2 11 3 9 10A 7 6 8 4 FIGURE 8 2-9 10B
OPERATION SEQUENCE OF OPERATION - DIAGRAM P/N 30073 REV F NOTE: Refer to FIGURE 9 page 2-11 for compoĆ nent locations. Component Reference 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 6. If the doors are closed, the door switch (12) should be closed sending 110VAC to the conĆ vection fan motor (6). NOTE: The door switch is located behind the combustion cover and is operated by the cam that is mounted on the right hand hinge pin.
DFGĆ100 and DFGĆ200 6 2 1 1 3 12 11 10b 9 10a 8 4 5 FIGURE 9 2-11 7
OPERATION FAN DELAY WITH PULSE PLUS SEQUENCE OF OPERATION - DRAWING P/N 20029 REV A Component Reference NOTE: Refer to FIGURE 10 page 2-14 for compoĆ nent locations. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. MODE SELECTOR TEN MINUTE FAN DELAY TIMER TEMPERATURE CONTROL BOARD AXIAL FAN PULSE TIMER TRANSFORMER DOOR SWITCH TWO SPEED MOTOR CENTRIFUGAL SWITCH IGNITION CONTROL TEMPERATURE PROBE A & B DUAL SOLENOID GAS VALVE COOK TIMER TPDT RELAY TPDT SWITCH LIGHT BULBS LIGHT SWITCH BUZZER 5.
DFGĆ100 and DFGĆ200 8. If time has been set on the fan delay timer (2), a circuit is made between terminals 1 and 2 alĆ lowing voltage to go to terminal 2 of the pulse timer. This sends voltage to the coil of a TPDT relay (14). NOTE: The sole purpose of this relay is to eliminate power to the cook timer moĆ tor during pulse operation. NOTE: The pulse timer is a solid state device which pulses the convection fan on and off for approximately 30 second inĆ tervals. 9.
1 FIGURE 10 2-14 9 7 2 11 3 10 4 5 8 15 12A 12B 6 13 14 1 OPERATION
DFGĆ100 and DFGĆ200 HUMIDAIRE SEQUENCE OF OPERATION - DRAWING P/N 18486 REV H Component Reference Operation NOTE: Refer to FIGURE 11 page 2-17 for compoĆ nent locations. 1. Power is applied to the appliance by a 110 volt power cord attached to the rear of the oven. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 2. Power is at L1 and N of the mode selector switch (1).
OPERATION 6. After the ignition control module (9) has comĆ pleted a diagnostics and all functions check out, 24VAC is sent to the pilot valve (11a) and a high energy spark jumps a gap at the pilot burner (12). When the pilot is lit and the pilot flame is proven, the ignition control module (9) sends 24VAC to the main valve (11b). NOTE: A 24VAC indicator light is wired in parĆ allel with the main valve to inform the operator that the main gas valve is beĆ ing powered up.
1 8 12 2 6 19 10 9 3 15 16 FIGURE 11 2-17 11a 11b 20 5 4 14 7 13 18 17 1 DFGĆ100 and DFGĆ200
OPERATION INTELLIPLUS WITH CHAIN EVENT CONTROL SEQUENCE OF OPERATION - DRAWING P/N 21846 REV D Component Reference NOTE: The motor only operates continuously if the control is not set for pulse. If a time is programmed for pulse, the conĆ trol opens and closes a set of contacts to cycle the fan on and off. NOTE: Refer to FIGURE 12 page 2-19 for compoĆ nent locations. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14.
1 FIGURE 12 2-19 7 4 14 2 11 13 18 3 6 9 12b 10b 10a 5 12a 1 DFGĆ100 and DFGĆ200
OPERATION INTELLITOUCH SEQUENCE OF OPERATION - DRAWING P/N 19465 REV B Component Reference NOTE: Refer to FIGURE 13 page 2-21 for compoĆ nent locations. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. MODE SELECTOR SWITCH DOOR SWITCH TRANSFORMER CONVECTION BLOWER CENTRIFUGAL SWITCH IGNITION CONTROL MODULE SPDT RELAY TEMPERATURE CONTROLLER RTD PROBE PILOT VALVE PILOT BURNER MAIN VALVE 4.
1 2 10 5 11 3 7 12 7a 4 9 8 1 DFGĆ100 and DFGĆ200 FIGURE 13 2-21
OPERATION INTELLITOUCH II SEQUENCE OF OPERATION - DRAWING P/N 31173 REV C Component Reference NOTE: Refer to FIGURE 14 page 2-23 for compoĆ nent locations. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. MODE SELECTOR SWITCH TPDT RELAY TPDT RELAY AXIAL FAN DOOR SWITCH CONTROL TRANSFORMER TWO SPEED MOTOR IGINTION CONTROL A & B GAS VALVE TEMPERATURE PROBE 3. If the control (6) is programmed to cook a prodĆ uct and the door switch (5) is closed, the relays within the control close depending on the funcĆ tion chosen.
DFGĆ100 and DFGĆ200 1 1 2 8 3 4 5 6 3a 2a 11 10a 9 10b 7 FIGURE 14 2-23
CHAPTER 3 CALIBRATION AND ADJUSTMENT
DFGĆ100 and DFGĆ200 DOORS For units manufactured after August 1984 The DFGĆ100 and DFGĆ200 ovens feature double side mounted doors which operate simultaneously by means of a chain and turnbuckle linkage asĆ sembly. Should field adjustment be necessary, the two turnbuckles are located immediately behind the combustion compartment cover. CAUTION: the turnbuckles are located in a heat zone. Be sure the doors are in line with each other when viewed from the top and front.
CALIBRATION AND ADJUSTMENT DOOR BLOWER SWITCH THERMOSTAT The door activated blower switch should be adĆ justed so the doors are about 1Ć1/2" (4 cm) from the liner when the switch shuts the blower off. If field adjustment is necessary, the switch can be reached by removing the combustion compartĆ ment cover. DFG BULB AND CAPILLARY THERMOSTAT For units with rocker style switches 1. Turn the mode selector/power switch to COOK ONLY. 1.
DFGĆ100 and DFGĆ200 CALIBRATING THE THERMOSTAT Bulb and Capillary Style Thermostat 1. Loosen the set screws in the thermostat knob. Pull the knob forward. 2. With a screwdriver, turn the small screw loĆ cated in the center of the thermostat stem eiĆ ther clockwise to lower the temperature or counterĆclockwise to raise the temperature. NOTE: Do not allow the main stem of the therĆ mostat to turn when adjusting the calĆ ibration screw. Solid State Analog Thermostat 1.
CALIBRATION AND ADJUSTMENT BURNERS Check the rating plate for proper orifice size and correct pressure regulator for the type of gas supplied. If different, the oven must be converted to the correct type of gas before operation. Do not attempt to operate the oven until corrected for the gas supplied. Floating flames: Floating flames are long, lazy, poorly defined, quiet flames which roll around the combustion chamber sometimes completely off the ports.
DFGĆ100 and DFGĆ200 SOLID STATE MANUAL 1. Place a pyrometer in the center of the oven. 2. Turn the mode selector switch to cook. 3. Turn the thermostat to 350_F (177_C). 4. When the red indicator light goes out, check the pyrometer to determine oven temperature. 5. If this reading is within 10_ (6_C) of the thermoĆ stat setting no adjustment is needed. If the reading is greater than 10_ (6_C) adjust as follows: A.) Locate the trim pot on the solid state temĆ perature board. B.
CALIBRATION AND ADJUSTMENT SELECTOR SWITCH CALIBRATION 1. Place a pyrometer in the center of the oven. 5. Repeat steps 3-4 for all 8 positions. 2. Turn the mode selector switch to cook. NOTE: It is possible for all 8 positions to be out of calibration but highly unlikely. 3. Set 8 position selector switch to one of the eight positions. NOTE: The 8 individual positions are each set for a temperature of the customer's choosing.
DFGĆ100 and DFGĆ200 INTELLITOUCH CONTROL SECOND LEVEL PROGRAMMING To access 2nd level programming 5. Repeat steps 1Ć3 for each parameter. When the final parameter setting is entered and saved the #1 LED illuminates. 1. Turn the oven off. 2. Locate the 3 pin header on the bottom right side of the control. Move the jumper from the middle and bottom pins to the middle and top pins exposing the bottom pin. LED(s) 3. Turn the oven on. The program LED (1) lights. 1. The #1 LED illuminates.
CALIBRATION AND ADJUSTMENT SOLID STATE DIGITAL SECOND LEVEL PROGRAMMING NOTE: Refer to page NO TAG for illustration of control. SETTING THE DISPLAY SCALES DIGITS To Initiate Programming 1ST 1. Set the time to 1 minute. 0:01 01:00 2ND 3RD 4TH 2. Set the temperature to 151_F (66_C). To Access Second Level Programming 1. Press and hold the TEMPERATURE key and the START/STOP key simultaneously. 2. The control beeps and displays the software version for a few seconds. . The control has 3.
DFGĆ100 and DFGĆ200 INTELLITOUCH II SECOND LEVEL PROGRAMMING COMPUTERS WITH ON/OFF KEY IN CONTROL ALL CONTROLS 1. Place the control in OFF mode. Temperature display scale 2. Press the CLEAR key. 1. The display flashes _F/_C then MODE-? 3. Press the B, A, K, and E keys followed by the PROG/ENTER key. 2. Press any key to toggle the scale from _F to _C. 4. The display reads ACCESS. 3. Press the PROG/ENTER key to lock in new scale. 5. Input the relevant code from TABLE 3. 4.
CALIBRATION AND ADJUSTMENT INTELLIPLUS SECOND LEVEL PROGRAMMING NOTE: Time must be zeroed out in order to perĆ form the following functions. CHANGING MINUTES TO SECONDS OR HOURS TO MINUTES SETTING A TEMPERATURE OFFSET 1. Set the temperature dial to 230_. 1. Set the temperature dial to 210_. 2. Push and hold the START TIMER until the disĆ play changes from MIN to HR. 2. Push and hold the CANCEL and START TIMER keys until the display reads 000.UPO 3. Push the ACTUAL TEMP key. 3.
DFGĆ100 and DFGĆ200 BLODGETT IQ2T CONTROL FACTORY LEVEL PROGRAMMING Entering the programming mode Enabling/Disabling the fan error detection circuit 1. Press the program key. The top display reads CodE. 1. The top display reads FanC. The bottom disĆ play reads YES or NO. 2. Use the product keys to enter the factory proĆ gramming accss code: 4 5 2 3. Press the enter key. The top dislay reads Fact. 2. Press the TOGGLE/CLEAR KEY to toggle beĆ tween choices. Programming the oven configuration 3.
CHAPTER 4 PARTS REPLACEMENT
REMOVAL AND REPLACEMENT OF PARTS ACCESS PANELS AND DOORS CONTROL COVER WARNING 1. Remove combustion compartment cover. Before performing any maintenance or replacing any component on this unit, disconnect the oven from its electrical source and shut off the gas supply. 2. Remove the screw in the top of the control cover. 3. Pull the bottom of the control cover forward, down and off. If it is necessary to replace a defective component, use only genuine Blodgett OEM replacement parts. 4.
DFGĆ100/DFGĆ200 PERIMETER DOOR GASKET CENTER DOOR GASKET 1. Remove gasket screws. For ovens with 50/50 doors 2. Remove all door gaskets and top and bottom trim pieces. 1. Remove screws securing gaskets to the leadĆ ing edge right and left doors. Remove the gasĆ kets. NOTE: Side trim pieces remain in place. 2. Place rigid stainless strip which has been formed at a 90_ angle between the front and back halves of the right hand door. Position properly. 3.
REMOVAL AND REPLACEMENT OF PARTS OVEN DOOR 8. Position the glass in the frame with the black border facing upward. 1. Open the door. Remove the handle from the left hand door. 9. Replace the front frame assembly. Press firmly until the screw holes around the edge of the door are aligned. 2. Remove three (3) machine screws located along the bottom edge of the door. 10. Replace the screws, the center door gasket and the door handle. 3. Lift the door slightly. Pull forward until it clears the support.
DFGĆ100/DFGĆ200 LOWER DOOR HINGE AND SPROCKET ASSEMBLY For models manufactured prior to May 1986: 3. After the chain is in position, adjust the chain and turnbuckle as described on page 3-1 of the Calibration and Adjustment section to obĆ tain proper door synchronization. 1. Remove the door from the oven. For units manufactured after August 1984 2. Remove the rollĆpin securing the sprocket to the hinge pin assembly. Be sure the doors are in line with each other when viewed from the top and front.
REMOVAL AND REPLACEMENT OF PARTS MOTOR AND BLOWER ASSEMBLY BLOWER WHEEL MOTOR Blower Wheel with Build On Wheel Puller 1. Remove the blower wheel from the motor shaft. 1. Remove the racks and rack supports. If access to the rear of the oven is available: 2. Remove the blower wheel cover by loosening the baffle retaining screws located at each corĆ ner. Pull cover forward. 1. Remove the motor attachment bolts. 2. Lift the motor from the mounting bracket. 3. Remove the motor conduit. 3.
DFGĆ100/DFGĆ200 BURNER AND DEFLECTOR ASSEMBLIES MANIFOLD AND BURNER ORIFICES COMPARTMENT LINER BOTTOM 1. Remove the combustion compartment cover. 1. Remove the racks and rack supports. 2. Remove the brass compression fitting at the right end of the manifold. 2. Remove the blower wheel cover. 3. Remove the bottom perimeter door gasket. 3. Remove the two (2) screws securing the manĆ ifold to the oven. 4. Remove the screws securing the front, back and sides of the liner bottom. 4.
REMOVAL AND REPLACEMENT OF PARTS ELECTRIC IGNITER (GLOW COIL) AND PLUMBING COMPONENTS ELECTRIC IGNITER THERMAL DELAY RELAY ASSEMBLY 1. Remove the combustion compartment cover. WARNING 2. Remove the control compartment cover. The electric igniter is extremely brittle. Care must be taken when handling the igĆ niter to avoid breakage. 3. Close the doors. Pull the control module forĆ ward. 4. Remove the thermal delay relay assembly. 5. Replace by reversing the above procedure.
DFGĆ100/DFGĆ200 GAS PRESSURE REGULATOR SOLENOID VALVE For models manufactured prior to August 1984: For models manufactured prior to August 1984: 1. Remove the combustion compartment cover. 1. Remove the combustion compartment cover. 2. Remove the control compartment cover. 2. Remove the control compartment cover. 3. Close the doors. Pull the control module forĆ ward for easier access to the regulator. 3. Close the doors. Pull the control module forĆ ward for easier access to the solenoid valve.
REMOVAL AND REPLACEMENT OF PARTS CONTROL STACK ASSEMBLY COMBINATION DUAL GAS VALVE For models manufactured between August 1984 and January 1986: For models manufactured after August 1984: 1. Remove the control stack assembly. 1. Remove the combustion compartment cover. 2. Remove the combination dual gas valve from the control stack assembly. 2. Remove the control compartment cover. 3. Close the doors. Pull the control module forĆ ward for easier access to the control stack.
DFGĆ100/DFGĆ200 INTERMITTENT IGNITION DEVICE (IID) AND PLUMBING COMPONENTS IGNITION CONTROL AND TRANSFORMER For units manufactured after January 1986 WARNING NOTE: Ignition control for propane gas is supplied with 100% lockout if no proof of ignition within 25Ć45 seconds. Disconnect electrical power supply beĆ fore wiring the control into the circuit to avoid possible damage to the equipment. 1. Remove the combustion compartment cover.
REMOVAL AND REPLACEMENT OF PARTS CONTROL STACK ASSEMBLY COMBINATION DUAL GAS VALVE 1. Remove the combustion compartment cover. 1. Shut of main gas supply to the oven. 2. Remove the control compartment cover. 2. Remove the control stack assembly. 3. Close the doors. Pull the control module forĆ ward for easier access to the control stack. 3. Remove the combination dual gas valve from the control stack assembly. 4. Shut off main gas supply to the oven. 5.
DFGĆ100/DFGĆ200 ELECTRICAL COMPONENTS NOTE: A test cord is available to allow removal of the control module from the oven while reĆ taining electrical connections. ELECTRICAL COMPONENTS LOCATED IN THE CONTROL MODULE 1. Remove the combustion compartment cover. BULB AND CAPILLARY THERMOSTAT 2. Remove the control compartment cover. 1. Remove the combustion compartment cover. 3. Close the doors. Pull the control module forĆ ward. 2. Remove the control compartment cover. 4.
CHAPTER 5 TROUBLESHOOTING
DFGĆ100 and DFGĆ200 HEAT HSI SYSTEM POSSIBLE CAUSE(S) SUGGESTED REMEDY Symptom #1 - Heat and motor do not operate D Oven not plugged in. D Plug in power cord. D Doors are open. D Close doors tightly. D Door switch is inoperable. D Check door switch for continuity. D Mode selector switch is not set to cook. D Turn mode selector switch to cook. D Circuit breaker tripped. D Reset breaker. D If control configuration has standard fan delay pulse plus feature, this feature may be activated.
TROUBLESHOOTING POSSIBLE CAUSE(S) SUGGESTED REMEDY Symptom #3 - Heat system does not recover quickly D Gas pressure not correct. D Refer to rating plate for correct gas pressure. D Oven out of calibration. D Reference the calibration procedures for the conĆ trol configuration on your appliance. D Incorrect orifice size. D Drill or replace the orifice for correct gas and elevation. Symptom #4 - Motor operates but there is no heat D Temperature control set below actual temperature.
DFGĆ100 and DFGĆ200 FLOW DIAGRAM Heat is not operational Is convection motor operational? No Yes Raise thermostat above ambient temperature No No Is thermostat calling for heat? No Is 110VAC on primary side of transformer? No Yes Is 24VAC on secondary side of transformer? Is 24VAC applied to terminal #6 of ignition control module? Yes Check thermostat circuit for bad probe, board, potentiometer or controller No Are doors closed? Is door switch operational? Yes Check centrifugal switch in
TROUBLESHOOTING A Is ignition control sending a spark to the pilot burner? No Replace ignition control module Yes Is pilot light igniting? Is 24VAC applied to the coil of pilot valve? No Yes No Replace ignition control module Yes Replace gas valve. Is main valve igniting? Are microamps greater than .
DFGĆ100 and DFGĆ200 DISPLAY ERROR CODES INTELLITOUCH BLODGETT IQ CONTROL HELP the temperature setting exceeds the maxiĆ mum setting of 550_F. This will be shown as an alternating HELP and PROB display. PROB 1. Defective temperature probe. 2. Stripped insulation on probe wires. 3. Poor connection of probe terminals. 4. Probe sensing temperatures above or below the probe sensing range. 8888 an Intellitouch computer failure. NOTE: The error codes will appear in the top disĆ play.
TROUBLESHOOTING PROBE RESISTANCE VS TEMPERATURE Solid State Manual and Digital Controllers (probe P/N 18588) _F _C Ohms _F _C Ohms 100 38 53029 310 155 1519 125 52 30785 320 160 150 66 18591 330 166 175 80 11633 340 200 93 7528 210 99 220 105 230 Intellitouch II Controller (probe P/N 32289) _F _C Ohms _F _C Ohms 32 0 500 212 100 693 1340 68 1186 75 20 539 250 120 730 24 545 300 150 787 171 1052 86 30 558 356 180 842 350 177 936 125 50
DFGĆ100 and DFGĆ200 Intellitouch (probe P/N 20360) and Blodgett IQ Controllers (probe P/N 33074 _F Intellitouch (probe P/N 20360) and Blodgett IQ Controllers (probe P/N 33074 _C Ohms _F _C Ohms _F _C Ohms _F _C Ohms 60 16 1059 235 113 1422 410 210 1774 460 238 1872 65 18 1067 240 116 1432 415 213 1783 465 241 1882 70 21 1080 245 118 1442 420 216 1793 470 244 1892 75 24 1090 250 121 1453 425 219 1803 475 246 1901 80 27 1099 255 124 1463 430
