Johnson Controls HVWHP072B32S - Page 72

3-52
SM-18006
TROUBLESHOOTING
■460VType
Yes
Disconnect CN14
of W.S. PCB
No
Is LED2 (green) on
W.S. PCB flashing?
LED203 on the
inverter PCB (INV)
is turned ON.
Check limiting resistance
of incoming current.
Correctly connect wires
No
Yes
Is LED2 (green) on
W.S. PCB flashing?
Check the W.S. PCB (P3-53)
Yes
No
No
Yes
The connectors between
inverter PCB (INV) and
reactor (DCL) are correct.
Also, other connections for
inverter PCB (INV) are correct.
The setting of
DSW101 on
the inverter PCB (INV)
is correct (sec 3.1.3).
Yes
Check the wiring
between W.S. PCB and
inverter PCB (INV).
No
Correctly set wires.
Yes
Check the inverter PCB
1
(P3-53).
Yes
Check the inverter
PCB
1
(INV).
W.S. PCB: Water Source Unit PCB (PCB1)