Mitsubishi Electric PURY-WP200 Service Manual page 153

[ IX Troubleshooting ]
2512
1. Error Code
2512
3-way valve/Water flow rate control valve fault
2. Error definition and error detection method
Limit signal that is output from 3-way valve/water flow rate control valve is not detected or is not reset after it is detected.
3. Cause, check method and remedy
(1) Loose connectors, wiring fault
(2) 3-way valve/Water flow rate control valve fault
(3) Control board fault
HWE1113B
Cause Check method and remedy
When the LEDs on the control board (MV1a-MV1h, MV2a-
MV2h, and FCV3a-FCV3h) are lit, check the 3-way valves/
water flow rate control valves whose LED is lit for loose
connectors, wiring fault, and proper operation. When the
LEDs described above are not lit, check all the 3-way
valves/water flow rate control valves for proper operation.
If no problems are found with the above items, replace the
control board.
- 144 - GB