Hunter 44860 running Heat Pump w/ auxillery heat: Auto recovery mode raises the temperature above the set heat temp. I think it is recovering to the set cool temp. After recovery it maintains the proper temperature. The problem is it's extra hot at the start time of the programmed period and not saving energy.
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Re: auto recovery mode raises the temperature above
Hummm... how far is your Thermostat from your heater? I am reading your extensive manual but there is no mention of that distance? There was a early mention of batteries? Are yours fresh?
Is this a 'new' problem? Has it worked properly before?
Then there is this from the manual:
The installer can set SYSTEM functions once the thermostat is installed. The
default settings are shown in bold in the following list. Options are listed inside the
parentheses. Example: the default SYSTEM TYPE is CONVENTIONAL with (HEAT PUMP) as a second option. See pages 28-29 to change these settings.
Have you tried resetting your Thermostat?? Sometimes these basic 'onboard' computers get confused... especially true with lots of 'options'...
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Bruce, what you may be hearing is a short cycling of the fan and not a short cycling of the system. The fact that you indicate it only does it once per cycle kinda suggest that. If the ENTIRE unit was shutting down, it could indicate an adjustment in the 'heat anticipation' circuit on the thermostat sub-base was required. The heat anticipator is an adjustible resistor on non-digital thermostats that warm the spring that rotates the mercury bulb to cause it to shut off just a little bit before attaining setpoint...thus 'anticipating' the shut down temp and not 'overshooting' the setpoint.
Too low of a setting and the system will short cycle, too high of a setting and the system will overshoot the setpoint. The typical setting is .4 amp which is where the majority of sub-bases are set at from the factory.
call a service tech, this sounds complicated. To avoid using too much energy or burning down your life savings in heating bills, a certain sequence should be followed when the thermostat operates. The actual sequence will differ depending on what equipment you have available to control, as well as your location and heating and cooling loads. The money you could save by having it done right the first time will quickly pay for a service call, then keep on saving you money after that.
If it is a heat pump, the compressor will be running both in cool mode and in normal heat mode.
Confirm the current indoor temperature. Turn the thermostat up one degree at a time until it comes on. This will typically be 1 to 4 degrees increase. As soon as it comes on stop increasing the temp.
If the compressor is running, it is a heat pump.
Check the temperature coming our of the vents at that time. You should have 30 to 60 degrees increase from the air temp going into the unit and the conditioned air temp coming out.
Then turn the T-stat up another 10 degrees. If the temp coming out of the vents increases by 20 degrees or more. the strips are on.
The strips operate in three situations.
1) the system is set to emergency heat
2) The heat pump cannot keep up with the demand for heat. (because its too cold outside, the desired temp setting is greater than 4 to 8 degrees above the room temp, or the HP is malfunctioning.)
3) The HP is in defrost mode
You could also take the panels off the unit and look for a reversing valve, but unless you know what you are looking for you will not recognise it.
The only thing I can think of other than being just old and worn out is that by design it may not be set to run but so much at a time. Has this always done this since you have had it? It may be needing calibration. One thing you can try is to set it at 2 degrees higher than you want it and then it would shut off at the temp you actually want.
I had the same set and problem. I had a RC wire which is the power to the AC. But didn't have an RH wire which is the power for the heat. To fix this just use the jumper wire and insert it in with the RC wire and hook it up to the RH. Fixed my problem.
Auto recovery – allows heating and cooling systems
to gradually recover from an energy-saving setpoint
temperature to a comfort setpoint temperature. Auto recovery
calculates the time needed to adjust the temperature to
the next program setting. When the thermostat is in Auto
Recovery mode, the display will flash alternating messages of
RECO and the time. Auto Recovery can be disabled by sliding
the recovery switch on the back of the circuit board to the
(Auto Recovery will not operate if Permanent or Temporary holds
Press Hold/Return during the Auto Recovery process to
manually cancel the recovery.