Parts/Service for R-Z570ERU9 (SLS)

Parts/Service for R-Z570ERU9 (SLS)

Brand: HITACHI

Category: Refrigerator

Document Type: Parts/Service

Language: EN

Uploaded: Nov. 21, 2025, 7:20 p.m.

Manual Publish Date: 2011-01-01

  • Basic Operation (Time Chart): The chart illustrates the operational cycles of the refrigerator for models 435L-550L. It shows power supply status, F-sensor and R-sensor temperatures, damper operation, evaporator temperature, defrost heater status, and R-lamp activity in relation to various conditions like room temperature, compressor operation, and door status.
  • Conditions and Priority: Different operational modes and priorities are indicated based on sensor readings (e.g., F-sensor high temp, R-sensor low temp) and the state of components like the compressor and fan.
  • Defrosting System: Details the initiation and termination of the defrosting process, which is automatic for both freezer (F) and refrigerator (R) sections. Evaporation is noted as 'forced'.

Troubleshooting and error codes

Priority sequence Error code (LED on PCB) Breakdown list Breakdown description Operation
1 1s ON + B link once F-sensor abnormal F-sensor value abnormal Provisional mode
2 1s ON + B link twice R-sensor abnormal R-sensor value abnormal Provisional mode
3 1s ON + B link 3 times TC-sensor abnormal TC-sensor value abnormal Display error code
4 1s ON + B link 4 times D-sensor abnormal D-sensor value abnormal No defrosting
5 B link twice EEPROM data abnormal EEPROM data abnormal Display error code
6 B link 12 times R-Fan motor abnormal or 12V drops R-Fan motor abnormal or 12V drops R-Fan motor stops and retry after 3m in.
7 B link 4 times Defrosting circuit abnormal Defrosting continues even after 2 hours After 2 hours, stop defrosting and display error code
8 3s ON + B link once Freezer not cool F-sensor stays over -10°C for 72 hours Display error code
9 3s ON + B link twice Refrigerator not cool R-sensor stays over 10°C for 72 hours Display error code
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