Heat Controller Water Source Heat Pump - Manual (Page 113)

WattMaster WHP Section 4
Start-Up and Troubleshooting 4-31
5.3.7 (continued)
Action
Condition Action
If voltages are too high or too low on either
side 1. One or more of the attached controllers
has a damaged Comm Driver chip. Lo-
cate and replace the driver chip(s).
See "1.3.11 Comm Driver Chip Re-
placement”.
2. Wiring errors such as "crossed connec-
tions", short circuits, etc.