Mode is on HEAT with the temp set to 17 (C) The room heats up to 23(C) but the unit keeps on heating rather than going into standby. Whats wrong?? - Colin

In your remote, there is mode button, the symbols for each option will display. The symbols are:
"
Now symbols:
1. fan leaves - Fan only
2. Rain drop- Dry mode
3. Snow flake-Cool mode
4. Sun- Heat
5. A or AU- Auto mode.To get proper cold air set temp 23 degree and mode"cool". To get heat set temp minimum 3 degree more than room temp and mode in "Heat"

All thermostat is calibrated @ difference of 2 degree.to cut in and cut off.
In heat mode, if you keep 25 and your room temp 23. it will start at the end of 24 or beginning of 25 degree.Cut off also @27 degree beginning. Please check Tips & how to do's in Fixya

Toget proper heat, keep your temp setting at 30+ degree and also mode in "heat"position. If still no heat, check your heating sensor for closed circuit by anOHMs metre.It it's with RV, check power to RV.If it's with heatingelement check power to element. If power is there but still no heat meanselement defective. Replace new heating element. Thanks. To get proper cool, keep the tips as follows:
1. Check air filter is cleaned. 2. Check indoor coil is cleaned. 3. Checkindoor blower motor is working. 4. Keep in cool mode. 5. Set temp minimum 3degrees less than room temp.6.Check compressor is working with correctpressure.
Thanks. Helpful?

Simple way to pay less bill with big comfort.
Tips for it: To get proper cold air set temp 23 degree and mode"cool". To get heat set temp 30 degree and mode in "Heat" Clean indoor and out door periodically ( Once in 4 months) Clean Air filter every fortnightly. Avoid frequent opening of the door where it's air conditioned. Avoid keep closing the doors even a/c is switch off. It helps to cool the room next times in short minutes. Use proper breaker, wiring for your air conditioner plug points. Make sure your elect meter is working properly.Check your Elect meter with 1000watts bulb for one hour. It should consume one unit only. Hope, it's helpful.

keep heat mode and temp setting minimum+5 degree than your room temp. Thanks.

Coils freezing due to dust blocked coils and or air filter or short of gas. Service your unit completely.Please do not change any spare/s without knowing exact problem. Please follow the steps given below.

Toget proper heat, keep your temp setting at 30+ degree and also mode in "heat"position. If still no heat, check your heating sensor for closed circuit by anOHMs metre.It it's with RV, check power to RV.If it's with heatingelement check power to element. If power is there but still no heat meanselement defective. Replace new heating element. Thanks. To get proper cool, keep the tips as follows:
1. Check air filter is cleaned. 2. Check indoor coil is cleaned. 3. Checkindoor blower motor is working. 4. Keep in cool mode. 5. Set temp minimum 3degrees less than room temp.6.Check compressor is working with correctpressure.
Thanks. Helpful?

Please check power in your room. Its no logic that all the units are having same problem at a time. May be common problem that is power.
To get proper cool, keep cool mode,and also temp setting 23 degree.

To getproper heat, keep your temp setting at 30+ degree and also mode in "heat"position. I

Check the following if you're unit is not giving heat.
1. Keep temp setting +8 degree from your room temp 2. Keep mode in "Heat". And check the click sound in RV when you turn to heat mode. If one failed out of three your unit will not supply heat.

The unit is probably to small for theare you are trying to heat.

When the Aux HT light came on that meant the heat pump could not keep up with the demand for heat. (Probably due to extreme cold, or undersized unit.)

If yu have heat, then at least one heat strip is operating. If you have multiple heatstrips, one or more could be malfuncioning.

Or it could simpy be to cold/to small fr your area and not able to keep up.

How many square foot are you trying to heat?
What is the outside temp?
What is the inside temp?
What size unit (BTU output) do you have?

to tricked the thermostat only a way i know,to put on it an ice cube for a while.propably wrong choice to installed roof unit you must installed to the floor better for the ac and to you