Troubleshooting; Electrical Ratings - Honeywell Home AQ12C20 Manual

Troubleshooting

If you have difficulty with your thermostat, please try the following suggestions.
Most problems can be corrected quickly and easily.
Display is
blank
Heating
system does
not respond
Temperature
settings do
not change

Electrical ratings

Terminal
W Heating
• Check circuit breaker and reset if necessary.
• Make sure power switch for heating system is on.
• Make sure fresh AA alkaline batteries are correctly installed
(see page 8).
• Press Mode button to set system Heat (see page 3).
Make sure the desired temperature is set higher than the
inside temperature.
• Check circuit breaker and reset if necessary.
• Make sure power switch for heating system is on.
• Wait 5 minutes for the system to respond.
Make sure heating temperature is set to an acceptable range:
• Heat: 40 °F to 90 °F (4.5 °C to 32.0 °C)
Voltage (50 Hz/60 Hz)
20 VAC - 30 VAC
Running Current
0.0 A - 1.0 A
10