blowing cold air when heat pump enters defrost mode

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blowing cold air when heat pump enters defrost mode
Posted On: January 29, 2023


I have a standalone (non-dual fuel) electric Heat Pump/AC. I tend to notice the issue of cold air blasting about every hour/when condenser enters defrost mode more when it is below freezing. I have the lockout set to 17 degrees. This has been happening since the new system was installed about a year ago and 3 techs can't figure it out. One thread I saw said you need to let the thermostat know that it is OK to run AUX the same time as the heat pump but I can't figure out how to do that.


My setup:.


https://imgur.com/a/ACtSjfm.


https://imgur.com/a/eHdDNMc.


https://imgur.com/a/mrtW4ZW.


Question from user SignoftheTimes23 at hvacadvice at reddit.com.


Answer:

Might be the nest, might just be an actual problem with the aux heat or defrost board, or wiring.


Answer from user lost_horizons at hvacadvice at reddit.com.


blowing cold air when heat pump enters defrost mode

The post blowing cold air when heat pump enters defrost mode appeared first on KDM Gas.


Re Posted From: blowing cold air when heat pump enters defrost mode

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[BACK]
blowing cold air when heat pump enters defrost mode
Posted On: January 29, 2023


I have a standalone (non-dual fuel) electric Heat Pump/AC. I tend to notice the issue of cold air blasting about every hour/when condenser enters defrost mode more when it is below freezing. I have the lockout set to 17 degrees. This has been happening since the new system was installed about a year ago and 3 techs can't figure it out. One thread I saw said you need to let the thermostat know that it is OK to run AUX the same time as the heat pump but I can't figure out how to do that.


My setup:.


https://imgur.com/a/ACtSjfm.


https://imgur.com/a/eHdDNMc.


https://imgur.com/a/mrtW4ZW.


Question from user SignoftheTimes23 at hvacadvice at reddit.com.


Answer:

Might be the nest, might just be an actual problem with the aux heat or defrost board, or wiring.


Answer from user lost_horizons at hvacadvice at reddit.com.


blowing cold air when heat pump enters defrost mode

The post blowing cold air when heat pump enters defrost mode appeared first on KDM Gas.


Re Posted From: blowing cold air when heat pump enters defrost mode

KDM Gas

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