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Troubleshooting Guide
I
F...
Display will not come on.
Temperature display will not go
°
°
lower than 7
C [45
°
°
31
C [88
F] during programming.
Temperature change occurs at the
wrong times.
Heating will not come on.
F] or higher than
THEN...
Set the system switch to OFF; remove batteries; insert
backwards for at least 5 seconds to reset thermostat;
replace batteries correctly. Display should come on.
Make sure batteries are fresh and installed correctly.
You have reached the temperature setting limit.
The setting range is 7° C to 31° C [45° F to 88°F].
Check the program times for the period in
question. Be sure that AM and PM indications
are correct. Make sure the current day and time are
correct. Reprogram if necessary.
Check that switch on thermostat is set to HEAT.
Check the system fuse or circuit breaker and replace or
reset if necessary.
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