Wiring Guide

161 LCD Display

Relay 1

Testing the Wiring

Testing 24 V (ac) Power Supply

1. Remove the front cover from the setpoint control.

2. Disconnect the wires from the relay.

3. Use an electrical test meter and check for continuity across the relay.

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• When the relay symbol is displayed in the LCD, there should be continuity.

•

• When the relay symbol is not displayed in the LCD, there should be no continuity.

4. Reconnect the wires to the relay.

5. Install the front cover on the setpoint control.

Testing the Relay

1. Remove the front cover from the setpoint control.

2. Use an electrical test meter to measure (ac) voltage between the R and C

terminals. The reading should be 24 V (ac) +/– 10%.

3. Install the front cover.