Honeywell TH2110D Owner's Manual - Page 19

In case of difficulty

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PRO 2000 Series ENGLISH In case of difficulty Screen is blank. Temperature settings cannot be changed. Cool On or Heat On is flashing. HI appears on the screen. LO appears on the screen. E1 appears on the screen. E2 appears on the screen. • Check circuit breaker and reset if necessary. • Ensure the heating/cooling system is powered up. • Ensure the furnace door is properly closed. • Ensure two fresh AAA alkaline batteries are correctly installed. • The System switch is off. • You are setting the temperature outside its allowable range: • Heat: 40 °F to 90 °F (4.5 °C to 32 °C). • Cool: 50 °F to 99 °F (10 °C to 37 °C). • The compressor protection delay is underway. Wait for the delay to end (maximum of 5 minutes). • The ambient (measured) temperature is above 122 °F (50 °C). • The ambient (measured) temperature is below 32 °F (0 °C). • The temperature sensor circuit is opened. Replace the thermostat. • The temperature sensor circuit is shorted. Replace the thermostat. 15

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PRO 2000 Series
15
ENGLISH
In case of difficulty
Screen is blank.
•
Check circuit breaker and reset if necessary.
•
Ensure the heating/cooling system is powered up.
•
Ensure the furnace door is properly closed.
•
Ensure two fresh AAA alkaline batteries are correctly installed.
Temperature settings cannot be
changed.
• The
System
switch is off.
•
You are setting the temperature outside its allowable range:
•
Heat: 40 °F to 90 °F (4.5 °C to 32 °C).
•
Cool: 50 °F to 99 °F (10 °C to 37 °C).
Cool On
or
Heat On
is flashing.
•
The compressor protection delay is underway. Wait for the delay
to end (maximum of 5 minutes).
HI
appears on the screen.
•
The ambient (measured) temperature is above 122 °F (50 °C).
LO
appears on the screen.
•
The ambient (measured) temperature is below 32 °F (0 °C).
E1
appears on the screen.
•
The temperature sensor circuit is opened. Replace the thermostat.
E2
appears on the screen.
•
The temperature sensor circuit is shorted. Replace the thermostat.