MovinCool CM25 Service Manual - Manual (Page 56)

Repair Section
56
6.4 Self-Diagnostic Code Display Operation and Control
(1) WMC
• When an abnormality occurs in a unit, a self-
diagnostic code and “CHECK” will display on
the WMC.
Switching the self-diagnostic code display
mode
• The self-diagnostic code display can be
switched between user mode and service
mode.
- Press and hold the “  ” and “  ” buttons
simultaneously for 3 seconds.
- When in the service mode, self-diagnostic
codes flash.
Self-diagnostic code reset
- While the self-diagnostic code is displayed,
press the “RESET” button.
The self-diagnostic code and “CHECK”
displays will turn off, and the system will switch to standby mode.
The LEDs on the WMC and relay board will illuminate.
(2) When the MWT is connected
• When an abnormality occurs in a unit, self-diagnostic codes are displayed via illuminated LEDs
on the relay board.
Self-diagnostic codes are reset by opening and then closing the circuit breaker.
I003174
Self-Diagnostic
Code
"CHECK"
Turn On
ILL00686-00
LED 7
1 6
LED 1~6
Relay Board