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Do you know how to enter the setup menu? And do you have the 5110,5320 or 5220?
OK, now a couple of questions about the heat pump.
1. Model on outdoor section
2.Brand of heat pump.
These will help me guide you more accurately if you have them
Below is a link that will show you how th enter the setup menu on the TH5320.
Press and hold the up arrow and FAN buttons until display changes.Then set as follows:
1 = 5
2 = 0
8 = 9
Any other functions are at your discretion.
If any functions listed do not show available, this means thermostat has setup based on a previous selection..Let me know if you need help doing this.
Do this and let me know if this solves your problem
Sounds great.That should fix you up.If not I will be here .