BRAND: MERIDIAN SERVICE MANUAL LAUNDRY PRODUCTS Combo Washer Dryer MODELS MD3720CEE (WHITE / PLATINUM) - VENTLESS
# TABLE OF CONTENTS # • Warranty Information………………………….……….………………….. 3 • Safe Servicing Practices……………………………………………………… 4 • Installation ………………………………………………..……………………….. 5 • Important Pre Service Instructions……………………..…………….. 6 • Diagnosis & Technical Troubleshooting…………………………….. 7 • Replacement Procedure, Wiring & Testing of parts………….. 12 • Quick Check………………………………………………..……………………….. 29 • Contact Information…………………………………..………………………..
WARRANTY INFORMATION FULL ONE-YEAR WARRANTY Meridian Appliances undertakes to the consumer-owner to repair or, at Meridian Appliances’ option, to replace any part of this product which proves to be defective in workmanship or material under normal personal, family or household use, in the U.S.A., for a period of one year from the date of original purchase.
SAFE SERVICING PRACTICES 6. Prior to returning the product to service ensure that: • all electric, gas, and water connections are correctly and securely connected. • all gas and water connections are tested for leaks. DO NOT TEST FOR GAS LEAKS WITH A 1. Do not attempt a product repair if you have FLAME. any doubts as to your ability to complete it in a • all electrical leads are properly dressed and safe and satisfactory manner. secured away from sharp edges, high-temperature components and moving 2.
INSTALLATION (MD 3720 CEE ) Inlet Hoses The inlet hoses must be fitted with the special rubber washers. These rubber washers ensure a water tight seal between the hoses and the water inlet valves to prevent water leaks. Water should flow freely into the machine, be sure that the inlet hoses are not bent or kinked. Please read the following steps carefully (Fig.1, Fig.2) 1. Connect the gray end of the hot-water hose to the hot-water faucet (Fig.1). 2.
IMPORTANT PRESERVICE INSTRUCTIONS ► It is advisable for anyone to go through the following points before one actually works on the unit. • Shipping bolts: The unit is shipped with 3 shipping bolts and spacers to avoid any damage to the unit during shipping. Make sure that all the shipping bolts and the spacers have been removed from the unit.
DIAGNOSIS AND TECHNICAL TROUBLESHOOTING ◊ INSTALLATION ◊ 1) Machine vibrating or vibrating noise a) Shipping bolts not removed: There are 3 shipping bolts which must be removed along with the 3 spacers. b) Machine not leveled: Adjust front leveling legs and tighten locknuts. c) Machine installed on uneven floor: Adjust leveling legs.
is present, the machine should fill. If not, the valve is defective. 2) Unit fills, won’t agitate / tumble a) Belt: Check belt, adjust tension. b) c) d) Motor Bolts: Check if the motor is bolted properly. Pressure Switch: Set the washer knob to Towels / Sheets position. Switch on the unit. The unit should fill in water and stop to fill. After the unit stops filling, test for 115V AC across Pin#14 of the pressure switch and terminal#2 on the control module.
b) Unstable floor: Remove carpeting, move to another location, or install underlayment. c) Unit not leveled properly: Adjust leveling legs, tighten lock nuts. d) Drum not leveled: If vibration persists then open the top cover and see if the drum is leveled up. If not the position of the springs holding the drum may have to be adjusted or else replace the springs. 6) Water leaks from detergent drawer a) Unit not leveled: Adjust leveling legs, tighten lock nuts. b) Spinning with water in tub: Not draining.
regulator and the wire M1 on the motor connector, if there is no continuity, the wash timer is bad, check the continuity between terminals 3 & 4 on the speed regulator if there is continuity then the speed regulator is bad or else the Wash timer is bad. 12) Unit won’t spin in cycles: Normal / Casual / Quick / Delicate / Wool a) Motor: See Testing of motor. b) Speed Regulator / Wash Timer: Set the wash timer to the position one click away from the off position for the Normal cycle.
3) Clothes hot and damp at the end of dry cycle a) b) c) d) e) f) Blocked filter / Coin Trap: Remove, clean, and replace filter. *No cold water supply: Cold water is required for dryer to function properly. * Machine not leveled: Condenser water flow disturbed. Level unit and retest. Blower impeller: Remove and clean. Also check to see if condensing channel is clogged with lint. *Condenser water valve inoperative: Test for 115V AC across the valve terminals. If present, valve may be defective.
Replacement Procedure, Wiring & Testing of Parts 1) Power Switch (52799) Replacement Procedure: ▪ ▪ ▪ ▪ ▪ ▪ Unplug the unit. Remove the top panel (Two screws behind and slide back) Pull out the soap dispenser, plastic washer knob and dryer knob. Remove the control panel. (3 Screws) Pull out the plastic switch cover for the power switch. Pull out the power switch by matching the grooves in the panel pushing the switch towards the back. ▪ ▪ Replace with the new switch and do the wiring as before / below.
2) Door Switch / Door Lock (00750) Replacement Procedure: ▪ ▪ Unplug the unit. Open the door remove the clamp to the door gasket in the front to access the door switch. ▪ ▪ ▪ Unscrew the two screws to the door switch. Replace with the new door switch and do the wiring as before / below. Fix all the parts back by following the reverse procedure.
3) Pressure Switch (50774) Replacement Procedure: ▪ ▪ ▪ ▪ Unplug the unit. Remove the top panel (Two screws behind and slide back) Unfix the screw to the pressure switch and replace the same. Fix all the parts back by following the reverse procedure. Wiring: Pressure Switch – Back View 32 34 31 16 11 14 12 P1 P2 P3 P4 P5 P6 22 24 21 P7 P8 P9 P10 Testing Procedure: ▪ Cold Test: 1) 2) Check for continuity between terminals 11 & 12, 21 & 22, 31 & 32.
4) Cold water valve (10820) Replacement Procedure: ▪ ▪ ▪ ▪ ▪ ▪ Unplug the unit. Remove the top panel (Two screws behind and slide back) Unfix the two screws at the back which hold the cold water valve.(Marked C) Remove the clamps to the two hoses. Replace with the new valve and do the wiring as before / below. Fix all the parts back by following the reverse procedure.
5) Hot water valve (00821) Replacement Procedure: ▪ ▪ ▪ ▪ ▪ ▪ Unplug the unit. Remove the top panel (Two screws behind and slide back) Unfix the two screws at the back which hold the hot water valve.(Marked H) Remove the clamp to the hose. Replace with the new valve and do the wiring as before / below. Fix all the parts back by following the reverse procedure.
6) Wash Timer (50819) Replacement Procedure: ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ Unplug the unit. Remove the top panel (Two screws behind and slide back) Pull out the soap dispenser, plastic washer knob and dryer knob. Remove the control panel. (3 Screws) Unfix the screw that holds the timer cam to the timer shaft and pull out the timer cam. Unfix the two screws that hold the timer and take out the timer. Pull out all the housing of wires from the terminals of the timer and replace the same.
7) Dry Timer (50728) Replacement Procedure: ▪ ▪ ▪ ▪ ▪ ▪ ▪ Unplug the unit. Remove the top panel (Two screws behind and slide back) Pull out the soap dispenser, plastic washer knob and dryer knob. Remove the control panel. (3 Screws) Unfix the two screws that hold the dry timer and take out the timer. Pull out all the wires on the dry timer and replace the same. Fix all the parts back by following the reverse procedure.
8) Half Load Switch (51799) Replacement Procedure: ▪ ▪ ▪ ▪ ▪ ▪ Unplug the unit. Remove the top panel (Two screws behind and slide back) Pull out the soap dispenser, plastic washer knob and dryer knob. Remove the control panel. (3 Screws) Pull out the plastic switch cover for the half load switch. Pull out the half load switch by matching the grooves in the panel pushing the switch towards the back. ▪ ▪ Replace with the new switch and do the wiring as before / below.
9) Half Heat Switch (50799) Replacement Procedure: ▪ ▪ ▪ ▪ ▪ ▪ Unplug the unit. Remove the top panel (Two screws behind and slide back) Pull out the soap dispenser, plastic washer knob and dryer knob. Remove the control panel. (3 Screws) Pull out the plastic switch cover for the half heat switch. Pull out the half heat switch by matching the grooves in the panel pushing the switch towards the back. ▪ ▪ Replace with the new switch and do the wiring as before / below.
10) Fusible Link / Wire with fuse (00807) Replacement Procedure: ▪ ▪ ▪ ▪ ▪ ▪ Unplug the unit. Remove the top panel (Two screws behind and slide back) The fusible link is located on the heater housing as shown in the figure. There is a small fuse inside the covering held by the clamp crewed on the housing. Unfix the screw and replace the same and do the wiring as before / below. Fix all the parts back by following the reverse procedure.
11) Thermostat (00808) Replacement Procedure: ▪ ▪ ▪ ▪ ▪ ▪ Unplug the unit. Remove the top panel (Two screws behind and slide back) The fusible link is located on the heater housing as shown in the figure. There is a small fuse inside the covering held by the clamp crewed on the housing. Unfix the screw and replace the same and do the wiring as before / below. Fix all the parts back by following the reverse procedure.
12) Fan Motor (50732) Replacement Procedure: ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ Unplug the unit. Remove the top panel (Two screws behind and slide back) The fan motor is mounted on the heater housing. Unfix the support to the hater housing. (4 bolts on the top) Unfix the upper heater housing. (3 screws and a few clamps) The blower / fan is mounted on the shaft of the fan motor with the help of a nut Unfix the nut (rotate it clockwise) and remove the blower. Unfix the fan motor (4 screws on top).
13) Blower / Fan / Impeller Assembly (51733) Replacement Procedure: ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ Unplug the unit. Remove the top panel (Two screws behind and slide back) Unfix the support to the hater housing. (4 bolts on the top) Unfix the upper heater housing. (3 screws and a few clamps) The blower / fan is mounted on the shaft of the fan motor with the help of a nut Unfix the nut (rotate it clockwise) and remove the blower. Replace the same. Fix all the parts back by following the reverse procedure.
14) Heating Element (00745) Replacement Procedure: ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ Unplug the unit. Remove the top panel (Two screws behind and slide back) The heating element is located inside the heater housing. Unfix the support to the hater housing. (4 bolts on the top) Unfix the upper heater housing. (3 screws and a few clamps) Unfix the two nuts and remove the heating element. Replace the same and do the wiring as before / below. Fix all the parts back by following the reverse procedure.
15) Speed Regulator (00791) Replacement Procedure: ▪ ▪ ▪ ▪ ▪ ▪ ▪ Unplug the unit. Remove the top panel (Two screws behind and slide back) The speed regulator is located on the right hand side at the back of the unit. Unfix the housing of the speed regulator. (2 screws at the back) Slide out the speed regulator and replace the same. Do the wiring as before / below. Fix all the parts back by following the reverse procedure.
16) Drain Pump (00776) Replacement Procedure: ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ Unplug the unit. Make sure that there is no water in the unit. Carefully pull out the kick plate. Tilt the unit towards the left and carefully lay down the unit on the side. Unfix the four leveling legs and remove the bottom panel. Remove the clamps to the two hoses on the drain pump. Unfix the 4 screws that hold the drain pump to the cabinet and replace the same. Do the wiring as before / below.
17) Main Motor (50751) Replacement Procedure: ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ Unplug the unit. Make sure that there is no water in the unit. Remove the back panel (3 screws at the back) Remove the belt. Tilt the unit towards the left and carefully lay down the unit on the side. Unfix the four leveling legs and remove the bottom panel. The motor is supported with 3 bolts, unfix the same and replace the motor. Do the wiring as before / below. Fix all the parts back by following the reverse procedure.
Quick Check After replacing any part in the unit you can do a quick check to make sure that the unit is working normal by following the procedure below: • Checking Wash cycle - Set the washer knob to the Towels/Sheets position and press the Power button, the unit will start filling in with water from both the inlet valves, after a few minutes the unit stops to fill and the drum will start to agitate.
COMPANY INFORMATION APPLIANCE DESK BRAND: MERIDIAN CONTACT NUMBERS SERVICE, PARTS, ACCESSORIES & DETERGENT ORDERING: (800) 490 - 8018 TECHNICAL SUPPORT: (713) 933 - 1464 30
