SERVICE MANUAL MR-G57N-T-NZ - B.d.t.

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Display Error Display code Tens' place Ones' place Trouble Detecting method (*3) E 50 CHIL FZR Trouble of •When there is any trou- inverter circuit ble in the circuit which detects current of com- (*6) pressor. E 51 CHIL FZR Trouble of •When the range of bus-bar bus- bar volt- voltage is not approx. age DC 50~380 V. STOP (*6) Self-check Error display E 52 E 53 E 54 E 55 E 56 E 57 *1 : The setting of ice making compartment will be displayed and blinks during or after ice making test operation. *2 : This operation is called the recovery operation: If the damper has not operated ever once during the compressor operation, make the damper operate when the compressor stops. *3 : When the resistance is , the circuit is deemed open-circuitted. When the resistance is 0 , the circuit is deemed short-circuited. *4 : Once E01 is detected, other errors would be ignored and not displayed on the panel. *5 : Characteristic value may change in order to improve the product. *6 : The error codes E50 to E55 are not displayed even if those abnormalities occur at power input. Therefore, be sure to perform ice making test operation in order to check if any abnormality indicated by these error codes occurs. (See page 21.) *7 : If those errors still continue for 1 minute after the restart, E56 will be displayed again. 24 Check point Treatment Control CHIL Trouble of •When the inverter driv- inverter software ing software malfunc- FZR CRL reset function (*6) tions. Refer to “Compressor does not operate” at page 29. The compressor is suspended and reactivated Trouble of •When there is no cur- 10 minutes later. startup , synrent at compressor star- CHIL chronizationtup. or overcurrent •When phase current detection exceeds 5.5A at com- (*6) pressor startup. •When phase current exceeds 3.3A during com- FZR CRL STOP pressor operation. •When current of 5.3A or more runs into the busbar of control board. CHIL QCK Trouble of power supply When bus-bar voltage 1. Different voltage of power supply outlet (full wave voltage) is DC Replace the control Refrigerator compartment room light OFF FZR voltage 390V or above in power board. input. 2. Trouble of relay in the circuit on the control (*6) board Heaters. OFF Trouble of EEPROM (IC11M) Replace the When abnormality occurs in CHIL QCK control board (EEPROM accumulates data necessary for control. control board. power input, the compressor is suspended for 10 related trou- •When the data are not minutes. ble) input accurately. When abnormality occurs in FZR STOP •When microcomputer normal operation, the com- (*6) cannot read the data. pressor keeps operating. Defective wir- The errors E50 to E53 •Error display starts after ing connecting keep occurring over one it is regarded as E56. CHIL QCK or trouble of control board and a half hour. (the situation, which compressor •Error display continues until defrosting starts or cannot be operated, con- cooling operation gets tinues.) Refer to “Compressor does not operate” at page 30. back to normal. (Error display doesn’t disappear by unplugging and plug- FZR CRL ging the power cord. *7) •Try to restart compressor every 3 minutes. Inverter drive When the excess current Replace the Try to start the compres- CHIL QCK module abnor- error is detected before mality starting the compressor (failure of the IC in the inverter drive module). control board. sor every 3 minutes. FZR CRL STOP
6-3 BLOCK DIAGRAM OF PRINTED CIRCUIT BOARD MR-G57N-NZ Operation P.C. board •Setting up temperature, feature, quick mode and eco mode for each compartment •Display of self-check •Outside air thermistor •Buzzer 6-4 AUTO ICE-MAKER MR-G57N-NZ (1) Ice making cycle Water supply The ice tray is filled with water from the water tank. (2) Automatic ice maker circuit Control board Control circuit of refrigerator •Read/control each compartment temperature (Neuro-fuzzy) •Control on timers •Operation control of the parts such as fan motor or heater, etc. equipped inside/ outside Parts outside/inside of refrigerator For 325V DC system •Compressor For 230V AC system •Defrost heater •Vegetable compartment heater 1&2 •Rotational heater board •Water pipe heater •Refrigerator compartment room light •Ice making tray heater CN3A CN4D CN2A CN7S CN9D CN8K Ice ejection Control board For 12V DC system •Refrigerator fan motor •Machine chamber fan motor •Motor damper •Ice maker gear box •Three-way valve •Photosynthesis LED UV LED Blue LED •LED for bacteria removal from water tank After the detection lever checks the amount of ice, the ice tray is rolled over for ice ejection. When the ice storage bin is filled with ice, the ice tray does not roll over. 8-pin connector 6-pin connector 8-pin connector 25 Inverter control circuit of compressor •Inverter control of compressor •Inverter-drive power module •Detection of bus-bar voltage Water pipe heater For 5V DC system •Freezer compartment thermistor •Refrigerator compartment thermistor •Defrost thermistor •Door switch (For refrigerator compartment, ice compartment & freezer compartment) •Ice tray thermistor •Ice making compartment thermistor •Vegetable compartment thermistor •Position-specifying switch in ice maker gear box •Versa compartment thermistor Water pump motor 6-pin connector 6-pin connector Ice making Ice tray thermistor watches and controls the ice making operation Ice stock Ice is stocked in the ice storage bin. Ice making capacity is about 100 - 120 cubes a day. Stock capacity of Ice cubes is about 100 cubes. (With 8-cube ice tray) LED for bacteria removal from water tank Ice making compartment thermistor Ice tray thermistor Ice making gear box
Page 1: HOME REFRIGERATOR SERVICE MANUAL Mo
Page 4 and 5: 2 SPECIFICATIONS MR-G57N-NZ Accesso
Page 6 and 7: 3 MR-G57N-NZ WIRING DIAGRAM I.THERM
Page 8 and 9: 4 MR-G57N-NZ 86 203 196 OUTLINES AN
Page 10 and 11: 6 TROUBLESHOOTING 6-1 FUNCTION OF O
Page 12 and 13: (5) Service Check Function 1) Outli
Page 14 and 15: 3) Damper Operation Mode Setting Wi
Page 16 and 17: 4) Thermistor temperature check mod
Page 18 and 19: Switching over the mode Press to se
Page 20 and 21: (3) Select the adjustment level of
Page 22 and 23: (2) Timing in self-check Trouble of
Page 26 and 27: (3) Operation by ice making test Pr
Page 28 and 29: Freezer compartment [2] Compressor
Page 30 and 31: Inverter-related indication “Comp
Page 32 and 33: Vegetable compartment [6] Is the te
Page 34 and 35: 6-6 TROUBLE CRITERION OF MAIN PARTS
Page 36 and 37: Components/ Part Name Vegetable com
Page 38 and 39: Components/ Part Name Three-way val
Page 40 and 41: 6-8 TEST POINT DIAGRAM OF CONTROL B
Page 42 and 43: 8 DISASSEMBLY INSTRUCTIONS MR-G57N-
Page 44 and 45: OPERATING PROCEDURE PHOTOS Control
Page 46 and 47: OPERATING PROCEDURE PHOTOS Evaporat
Page 48 and 49: OPERATING PROCEDURE 5. Parts inside
Page 50 and 51: OPERATING PROCEDURE 9. Compressor c
Page 52: Door adjustment • Common element

SERVICE MANUAL MR-G57N-T-NZ - B.d.t.

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