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Symptom
No display
System fan does not come on
properly
Thermostat turns on and off too
frequently
Fan runs continuously
Room temperature is not correct
ROOM displays
Status indicator
filter displays
EH displays when button is pressed
Problem not listed above
Troubleshooting
Check for 24 VAC at thermostat; display is blank when 24 VAC is not present
Verify wiring is correct
Check configuration (see "Configuration Mode," Setting 2, Page 19)
See "Fan Test" (Page 23)
Adjust temperature differential (see "Temperature Differential," "Configuration
Mode," Settings 5 and 6, Page 20)
Check fan On/Auto switch, ON position runs indoor fan continuously
Verify wall hole is plugged with putty or insulation; calibrate thermostat (see
"Configuration Mode," Setting 9, Page 21)
Room temperature offset is not zero (see "Configuration Mode," Setting 9,
Page 21)
Green light – Cooling operation
Red light – Heating operating
Status indicator option ON (see "Configuration Mode," Setting 12, Page 21)
Fan run time has exceeded filter check time set in configuration (see
"Configuration Mode," Setting 11, Page 21)
To reset counter to zero and clear
simultaneously for 5 seconds
Thermostat is in Emergency Heat mode (see "Operating Modes," Page 24)
Press the Reset button once; display will be refreshed and anti-short cycle
timing will be reset to zero
Remedy
filter warning, press the
and
buttons
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