Heat Pumps and Electric Heating - Honeywell VisionPRO 8320 Error Codes

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Steve_in_PA
11-06-09, 08:07 PM
I have a newly installed
Honeywell VisionPRO 8320U
thermostat for my heat pump.

It is blinking an error code and I don't know how to interpret this. (repeating two snowflake blinks on the upper right side)

Does anyone know where I can find a table of error codes for this thermostat? There is no information in either the Operating Manual or the Installation Guide.

Houston204
11-06-09, 08:15 PM
The 2 flashes should be from a signal to your L terminal.
What make and model is your heatpump?