Heat Controller Water Source Heat Pump manual 5.0Troubleshooting, 5.1General Troubleshooting

WattMaster WHP Section 4

5.0Troubleshooting

5.1General Troubleshooting

The following is a guide to assist in troubleshooting the WattMaster WHP System. It is provided as a systematic approach to determining and resolving common system problems.

5.1.1Communications Troubleshooting Checklist

No WHP or Loop Controller Units are Communicating

•Is the CommLink II connected and plugged in?

•Is the CommLink II installed, a single or multiple loop version. A jumper in the CommLink can be set for “Single” or “Multi”. On the WHP system is considered a Multiple Loop version and the CommLink jumper must be set on Multi.

•Are Comm Loop voltages correct? See the Comm Loop troubleshooting guides.(page 4-24)

•Is the Comm Loop open or shorted?

•Is the CommLink II connected and plugged in?

•Is the MiniLink Voltage correct?

•Are the WHP and Loop Controller address switches set correctly? See the addressing chart. (WHP Loop Controller should always be set to address 30, see Figure 4-10)

•Is the MiniLink address switch set correctly? See the addressing chart.(see Figure 4- 10)

•Are the WHP and Loop Controllers powered? Check 24 VAC to the controllers.

•Is the System Manager connected to the Local Communications loop?

Some WHP Units are communicating but others are not:

•Are the WHP Controller address switches set correctly? See the addressing chart.

•Is the WHP Loop Controller address switch set correctly? See the addressing chart.

•Are the WHP Controllers and Loop Controller powered? Check 24 VAC to the controllers.

•Is the REC LED on the missing WHP Controller “flickering”? See WHP Controller introduction for location of the REC LED. (see Figure 4-4)

•Is the COMM LED on the WHP Controller blinking an error code? See the Blink Code chart. (see Figure 4-6)

•Are Comm Loop voltages correct at the missing unit? See Comm Loop troubleshoot- ing guide starting on page 4-24.

Start-Up and Troubleshooting 4-21