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Problem
Solution
SCRAMBLED OR DOUBLE DISPLAY
(numbers over numbers
NO DISPLAY
ENTIRE DISPLAY DIMS
AUTO/FAN DOES NOT COME ON
HEATING OR COOLING DOES NOT GO
ON OR OFF
1. Remove clear mylar sticker.
1. Check battery connections and batteries.
2. Press reset button once with a small pin
and hold in for two seconds.
1. Replace batteries.
1. Move HG/HE system selector to opposite
position.
1. Check that function switch is in correct
position (“HEAT” or “COOL”).
2. There may be as much as 20 seconds
delay before the system turns 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.
6. If your system only uses 4-wires, be sure
the jumper wire is installed between the
RC and RH terminals.
20-21