Mitsubishi Electric PUHY-M200YNW-A1 Service Handbook page 170

[7-1 Error Code and Preliminary Error Code Lists ]
Hydro unit
Which errors in the 4000's range apply to the pump inverter or the power-supply board can be determined by the lowest digit
of the two-digit detail code.
Example
4300 (Detail 01) code→Serial communication error Pump-inverter
4308 (Detail 08) code→Serial communication error Power-supply board
The last digit
<Pump inverter>
INV board Outdoor units
CMH-WM250V
INV32 CMH-WM350V
CMH-WM500V
BS_07_E
0 or 1
8
Overload protec-
tion Imax (Arms)
2.3
2.8
3.2
Inverter system
Pump inverter
Power-supply board
Current effective
value error (Arms)
5.0
Temperature
Current peak val-
protection TOL
ue error (Apeak)
(°C)
8.0 100
chapter 7 -
7