Service Manual Model BLF3451 UL Part Number 6909590100 IMPORTANT SAFETY INFORMATION: Always read this manual first before attempting to service this fireplace. For your safety, always comply with all warnings and safety instructions contained in this manual to prevent personal injury or property damage. Dimplex North America Limited 1367 Industrial Road Cambridge ON Canada N3H 4W3 1-888-346-7539 www.dimplex.
TABLE OF CONTENTS Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Exploded Parts Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OPERATION to increase the set point on the unit or the remote. Figure 1 • The Floating DisplayTM will indicate the temperature set point as it is adjusted. A C D E F ! NOTE: Holding the and the buttons down for two seconds, on the unit, will change the temperature from °C to °F, or vice versa. Disable Heat Floating DisplayTM WARNING: This electric firebox must be properly installed before it is used.
Remote Control Battery Replacement To replace the battery: 1. Slide battery cover open on the remote control. 2. Correctly install one 3 Volt (CR2032 [longer life] or CR2025) battery in the battery holder. 3. Close the battery cover. Battery must be recycled or disposed of properly.
EXPLODED PARTS DIAGRAM 1 18 16 3 10 8 14 7 11 13 9 6 2 12 4 Replacement Parts List 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. Element. . . . . . . . . . . . . . . . . . . . . . . . .2200510300RP Partially Reflective Glass . . . . . . . . . . . 5902700100RP Blower . . . . . . . . . . . . . . . . . . . . . . . . . .5300170300RP Front Glass . . . . . . . . . . . . . . . . . . . . . .6909140100RP Power Cord . . . . . . . . . . . . . . . . . . . . . .4100190300RP Flicker Motor . . . . . . . . . . . . . . .
WIRING DIAGRAM FLICKER MOTOR BLOWER MOTOR NEUTRAL M SWITCH BOARD LED STRIPS (RGB) - MEDIA M ELEMENT LED STRIPS (RGB) - FLAME FLAME LED STRIP (AMBER) THERMISTOR ELEMENT LINE AC/DC ADAPTER THERMAL CUTOUT DISPLAY / CONTROL BOARD HTR RELAY BOARD 6 www.dimplex.
PREPARATION FOR SERVICE ! NOTE: All components are replaceable from the front of the fireplace while the unit is mounted on the wall, with the exception of replacement of the power cord. ! NOTE: If the power cord needs replacing or if the unit needs to be removed from the wall for any other reason please begin service by following the “PREPARATION FOR SERVICE” instructions, then move on to the section “INSTRUCTIONS FOR REMOVING FROM WALL”.
Figure 5 32.4 in. (823 mm) 30.0 in. (761 mm) 7.0 in. (179 mm) 6.8 in. (172 mm) 3.8 in. (95 mm) 34.1 in. (867 mm) 19.4 in. (494 mm) ! NOTE: If the surface you are using as a work area on is a finished surface that is prone to scratches (i.e. hardwood flooring), it is recommended that a protective barrier be used underneath, (i.e. cloth, cardboard, thick plastic). 5. Proceed to the instructions within this manual relating to the repair being performed - see Table of Contents for page number. 6.
There are 2 screws per side, going from the side panels out into the side of the wall stud that frames the fireplace. (Figure 8) CAUTION: The unit should be supported while removing the screws to prevent the unit from falling. 3. Remove the fireplace out of the opening by slightly lifting and pulling forward. 4. Carefully lay the unit down on a solid flat surface with the front of the unit facing up. ! NOTE: If the surface you are using as a work area is a finished surface that is prone to scratches (i.e.
2. Slide the controls assembly out toward the front of the unit. CAUTION: Ensure that the assembly is removed carefully, ensuring that no wires are caught or over strained. 3. Locate the switchboard (Figure 10). 4. Disconnect the wiring harness from the switchboard. 5. Remove the switchboard by loosening the nuts on the spacer stands. 6. Install the new switchboard on the space stands. 7. Reconnect the wire harness onto the back of the switchboard in its original configuration. 8.
DISPLAY / CONTROL BOARD REPLACEMENT W ARNING: Disconnect power before attempting any maintenance or cleaning to reduce the risk of electric shock or damage to persons. CAUTION: If unit was operating prior to servicing allow at least 10 minutes for lights and heating elements to cool off to avoid accidental burning of skin. Tools required: Phillips head screwdriver CAUTION: Follow “Preparation for Service” instructions before proceeding. Tools required: Phillips head screwdriver 1.
FLICKER ROD REPLACEMENT W ARNING: Disconnect power before attempting any maintenance or cleaning to reduce the risk of electric shock or damage to persons. CAUTION: If unit was operating prior to servicing allow at least 10 minutes for lights and heating elements to cool off to avoid accidental burning of skin. Tools required: Phillips head screwdriver Short handled Phillips head screwdriver CAUTION: Follow “Preparation for Service” instructions before proceeding. 1.
HIGH TEMPERATURE CUTOUT REPLACEMENT W ARNING: Disconnect power before attempting any maintenance or cleaning to reduce the risk of electric shock or damage to persons. CAUTION: If unit was operating prior to servicing allow at least 10 minutes for lights and heating elements to cool off to avoid accidental burning of skin. Tools required: Phillips head screwdriver CAUTION: Follow “Preparation for Service” instructions before proceeding. 1.
Figure 15 Mounting Screws 8. Disconnect wires from the ends of the elements noting their original locations. ! NOTE: Using a flat head screwdriver gently pry between the end of the connectors and the element to release the wires. ! NOTE: Some of the wires may have a “piggy-back” connector that allows a second wire to connect to the same prong as the first wire. Try and keep the “piggy-back” connection together when pulling the wires off the element. 9. Reassemble in the reverse order as above.
may obstruct the ease of removing the Partially Reflective Glass from the fireplace. 2. Remove the Partially Reflective Glass retaining brackets by removing the 3 screws on each brackets; (3 brackets in total), located on the left and right side of the Partially Reflective Glass. (Figure 14) 3. Remove the Partially Reflective Glass. Carefully place the glass assembly aside in a safe location. 4.
TROUBLESHOOTING GUIDE PROBLEM CAUSE SOLUTION PART NUMBER General Circuit breaker trips or fuse Short in unit wiring. blows when unit is turned on Improper circuit current rating Trace wiring in unit.
PROBLEM CAUSE SOLUTION PART NUMBER Heater Heater is not turning on, but flame effect is still functioning Heater is turning off after a couple of minutes of operation Heater emits an odor Heater fan turns On but heater lacks heat Heating element is glowing red Heater fan runs continuously Improper operation Refer to Operation Section Loose wiring Trace wiring in unit Defective display/control board Replace the display/control board 3001640100RP Defective Heating Element Replace Heating Eleme
