54
Fig. 71
Error 13: Communication error between Control board and Relay Radiant Heat Control Module
The device cannot be controlled by the system. To solve this incident check:
1. Status of the module: Correctly powered.
2. Status of the module and the control board: Airzone connection bus LEDs are operating properly.
3. Connection: Check the polarity of the connectors of the control board and the module.
4. Wiring: Check that the voltage between the poles (A /-) and (B/-) is about 0.65 Vdc.
Fig. 72
AC unit error: Error in the AC unit
Check the type of error in the AC unit thermostat and follow the instructions provided by the manufacturer.
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