Control M6004, Instruction Manual

Page: 32 / 34

31
Problem Solution
Air-conditioning will not
come on.
• Check and ensure that the thermostat is set to COOL mode.
• Check and ensure that the set temperature is lower than the current (room) temperature
• 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 prevent undesirable on/off sequences.
• After a 5-minute wait, the air conditioning should now be on. Whenever the cooling
system is running, the cooling symbol will be flashing.
Air-conditioning will not
come on but the cooling
symbol is flashing .
• 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.
The thermostat turns the
heating or cooling
systems on before my
programmed set times.
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.
Cannot change the
thermostat scale from
ºC to ºF or vice-versa.
Selecting the temperature scales is a one-time start-up process. After the first battery
installation, you must HARD RESET the thermostat and choose the desired display
in ºC or ºF. Otherwise, you CANNOT change the temperature scale (ºC or ºF) later
on unless you perform another HARD RESET, which will clear all the programs and
thermostat settings.
The perform a HARD RESET and select ºC to ºF, first press and hold the fourth
button, and at the same time press and release the RESET button on the back of the
thermostat. The LCD screen will blank out momentarily. To select ºF, see the'optional
settings' section.
Supplementary Information
Troubleshooting