User's Manual

PROBLEM SOLUTION

Heat will not come on but the

symbol is animated.

Air conditioning will not come on.

Air conditioning will not come on

but the symbol is animated.

The thermostat turns the heating

or cooling systems on before my

programmed set times.

Heating system seems to cycle

too often.

1) Check if the furnace switch and/or pilot flame is turned on, as it may have been turned off.

2) Allow several minutes for the heating system to heat up and the fan to activate. Most heaters will heat

up the system for a short while before warm air can be ventilated by the fan. Also check that the

HE/HG setting is set correctly. (see optional settings)

3) If the heat still does not come on, check the wiring installation again.

1) Check and ensure that the thermostat is set to the COOL or AUTO mode.

2) Check and ensure that the set temperature is lower than the current (room) temperature.

3) You may have to wait up to 5 minutes before the air conditioning will turn on. The thermostat has a

built-in time delay to protect the air conditioner compressor from undesirable on/off sequences.

4) After a 5-minute wait, the air conditioning should now be on. Whenever the cooling system is

running, the symbol will be animated.

1) Check if the air conditioning system’s main switch is turned on, as it may have been turned off.

2) Wait several minutes for the air conditioning system to activate. If the air conditioning still does not

come on, check the wiring installation again.

This is normal if the Pre-comfort Recovery system is enabled. The Pre-comfort Recovery will activate

the heating/cooling in advance of the actual programmed set time so that the room will be at the

desired temperature at the start of the program time. See the “optional settings” section.

Check and ensure that you have selected a Cycle Rate that matches your particular heating system.

If you find it still cycling too often, you may wish to try a slower cycle rate or disable the cycling.

When disabled, the thermostat will operate at a fixed span of (plus or minus) ±0.5°C (±1.0°F).

For example, if the programmed temperature is set at 20°C (68°F), the thermostat will turn the heat

on if the current (room) temperature falls below 19.5°C (67°F) and turn the heat off when the current

(room) temperature reaches 20.5°C (69°F). See the “optional settings” section.