Control M6003 - Supplementary Information; Troubleshooting Common Issues

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Problem Solution
Display will not come on. • Check if the batteries are installed correctly.
• Check and see if batteries are fresh and the correct size.
• Press the R (reset) button.
Entire display ashes. • Batteries are low. Replace with fresh batteries
Air-conditioning will not
come on (COOL symbol
NOT ashing).
• System switch is in the HEAT or OFF position.
• Current temperature is lower than set temperature. Press CURRENT to check current program.
• Air-conditioning has been turned off within 5 minuted and automatic delay has been
activated to protect the compressor.
Air-conditioning will not
come on (COOL symbol
ashing).
• Check if the air-conditioning main switch is on; it may have been turned off.
Heating will not come
on (HEAT symbol NOT
ashing).
• System switch is in the COOL or OFF position.
• Current temperature is higher than the set temperature. Press CURRENT to check
current program.
Heating will not come on
(HEAT symbol ashing).
• Check if the furnace switch and/or pilot ame is turned on; it may have been turned off.
• Allow some time for the heater to heat up and the fan to activate. Most heaters
will heat up the system for a short while before warm air can be vntilated by the fan.
• HE/HG jumper inside the thermostat is not set correctly. Check installation manual.
The current temperature
is different from the
scheduled temperature.
• It is common for the setting and the displayed temperature to differ occasionally.
The thermostat will be activated if this difference persists.
• There is a temporary override by the user.
• The sysytem is on HOLD. Press HOLD once to resume normal setting.
Supplementary Information
Troubleshooting