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Operations
18
Problem
Trouble Shooting
Solution
SCRAMBLED OR DOUBLE DISPLAY (numbers over numbers) 1. Remove clear mylar sticker.
NO DISPLAY 1. Check battery connections and batteries.
2. Press reset button once with a small pin and hold in for two seconds.
ENTIRE DISPLAY DIMS 1. Replace batteries.
PROGRAM DOES NOT CHANGE AT YOUR 1. Check that time is set properly to "AM" or "PM."
DESIRED SETTING 2. Check that thermostat is not in "HOLD" mode.
3. Check for correct day setting.
HEATING OR COOLING DOES NOT GO ON OR OFF 1. Check that function switch is in correct position ("HEAT" or "COOL").
2. There may be as much as 20 seconds delay in the thermostat turning the
system on - wait and check.
3. Check your circuit breakers and switches to ensure there is power to the
system.
4. Replace batteries.
5. Make sure your furnace blower door is closed properly.
ERRATIC DISPLAY 1. Press the reset button once with a small pin and hold in for two seconds.
Then reprogram.
IF UNIT CONTINUES TO OPERATE IN OFF POSITION 1. Replace unit.
THERMOSTAT READS EE, HI, LO AT NORMAL 1. Replace unit.
ROOM TEMPERATURE