Hunter thermostat troubleshooting

Hunter thermostat troubleshooting table reflecting the most widespread cases of malfunctions and means of their removal is given below. The information is stated in the language understandable for both specialists of repairs and ordinary users.

Hunter basic thermostat troubleshooting

ProblemSolution
SCRAMBLED OR DOUBLE DISPLAY (numbers over numbers)1. Remove clear Mylar sticker
NO DISPLAY1. Check terminal connection. A common (C) wire is required for operation.
2. Check battery connections and batteries.
3. Press RESET button with a small pin and hold in for two seconds.
ENTIRE DISPLAY DIMS1. Replace Batteries
2. Adjust LCD contrast in the Option Menu.
PROGRAM DOES NOT CHANGE AT YOUR DESIRED SETTING1. Check that the time is set properly to "AM" or "PM".
2. Check that the thermostat is not in "HOLD" or "Home Today" modes.
3. Check for the correct day setting.
4. Check any remote sensor readings or weights.
AUTO / FAN DOES NOT TURN ON1. Move HG/HE selector to opposite position
FAN RUNS CONTINUOUSLY1. Check fan setting. It may be "ON"or in Programmable Fan mode"PGMON".
HEATING OR COOLING DOES NOT GO ON OR OFF1. Check that the system selector key is in the correct position ("HEAT; "COOL'’or "AUTO").
2. The thermostat may be in the AUTO mode. Look for "AUTO" on the LCD display. If the Heat and Cool program temperatures are close, then the thermostat requires a larger room temperature change before changing from Heat or Cool.
3. There may be as much as a 4 minute delay before the Heat or Cool sys- tem turns On - wait and check. (Compressor protection delay.)
4. Check your circuit breakers and switches to ensure there is power to the system.
5. Replace batteries.
6. Make sure your furnace blower door is closed properly.
7. Check the position of the Heat Pump switch.
ERRATIC DISPLAY1. Press the RESET button once with a small pin and hold for two seconds. The thermostat will need to be re-programmed.
IF UNIT CONTINUES TO OPERATE IN THE OFF POSITION1. Replace unit.
THERMOSTAT PERMANENTLY READS "Hi; TO," OR "Error" AFTER PRESSING RESET BUTTON1. Replace unit.

Hunter 43*** series thermostat troubleshooting


ProblemSolution
LCD Display is blank1. Check wiring connections. A Common (C) wire is required for operation.
2. Press and hold the Reset button for two seconds with the tip of a paper clip.
Auto/Fan does not turn on in Heat Mode1. Move the #1 System Set-Up Switch (HG/HE) to the opposite position.
Erratic display1. Press and hold the Reset button for two seconds with the tip of a paper clip. The thermostat will need to be re-programmed.
Fan runs continuously1. Check the Fan Switch. The fan will run continuously if the Fan switch is in the “on” position.
Heating or cooling does not go on or off1. Ensure the System Switch is in the desired position (“heat", “cool", “em heat").
2. There may be as much as a 4 minute Compressor protection delay before the Heat or Cool system turns on - wait and check.
3. Check your circuit breakers and switches to ensure there is power to the system.
4. Make sure your furnace blower door is dosed properly.
System continues to op erate in the Off position.1. Replace thermostat.
2. Make certain the thermostat is wired correctly and that none of the wires are touching other wires.
Thermostat permanently reads “E1”, “E2”, or “E3” after pressing the Reset button.1. Replace thermostat.