THERMOSTAT fEATURES
TROUbꢀESHOOTINꢁ
•
•
•
Large touch screen with adjustable backlight.
• Easy to use temperature control can override program
schedule at any time
DISpꢀAY IS bꢀANK
fAN DOES NOT TURN ON IN A CAꢀꢀ fOR HEAT
Message center provides feedback and instructions.
•
•
Check circuit breaker and reset if necessary.
• Check System Setting 09 (Fan Control), to make sure
the fan control is properly set to match the type of
system (see page 9)
•
•
Progressive recovery ensures proper temperature at
the start of a program event.
7 day programmability or separately programmable
weekday/weekend schedules.
Make sure power switch at heating & cooling
system is on
Built in compressor protection prevents damage to
•
Thermostat can be removed from the wall for easy
programming (batteries must be installed)
• Make sure furnace door is closed securely.
your equipment
HEAT pUMp ISSUES COOꢀ AIR IN HEAT MODE,
OR wARM AIR IN COOꢀ MODE
•
•
Battery back-up.
•
•
Front battery door access for fast, easy replacement.
TEMpERATURE SETTINꢁS DO NOT CHANꢁE
System test mode.
Displays room temperature, room humidity,
temperature setting, and optional outdoor temperature.
• Check wiring at the terminal block to confirm the
reversing valve is connected to the proper terminal.
O is active in cooling and B is active in heating.
Make sure heating and cooling temperatures are set to
acceptable ranges:
• RS485 communications ready.
• Universal system compatibility.
•
•
Air filter, humidifier, dehumidifier, and HVAC service
indicators
•
•
Heat: 40° to 90°F (4° to 32°C).
Cool: 50° to 99°F (10° to 37°C).
•
Configurable to control a humidifier or dehumidifier.
Programmable fan control with fan circulation mode.
HEAT/COOꢀ bOTH ON AT SAME TIME
•
Check SW1 (Equipment Type), to make sure it is set
to match the installed heating/cooling equipment
HEATINꢁ SYSTEM DOES NOT RESpOND
(
“HEATINꢁ” AppEARS ON SCREEN)
(
see page 8)
•
•
•
Check for 24VAC at the equipment on the secondary
side of the transformer between power and
common. If voltage is not present, check the heating
equipment to find the cause of the problem
• Check to make sure heating and cooling wires are
not shorted together
HEATINꢁ EQUIpMENT IS RUNNINꢁ IN
COOꢀ MODE
Check for 24VAC between the heat terminal (W)
and the transformer common. If 24VAC is present,
the thermostat is functional. Check the heating
equipment to find the cause of the problem
•
Check SW1 (Equipment Type), to make sure it is set
to match the installed heating/cooling equipment
(see page 8)
Check for loose or broken wires between the
thermostat and the heating equipment
“
HEATINꢁ” IS NOT DISpꢀAYED
COOꢀINꢁ SYSTEM DOES NOT RESpOND
(
“COOꢀINꢁ” AppEARS ON SCREEN)
• Check Installer System Setting number 05
(
Control Setup) is set correctly.
•
•
•
Check for 24VAC at the equipment on the secondary
side of the transformer between power and
common. If voltage is not present, check the cooling
equipment to find the cause of the problem
•
Change the System Mode to Heat, and set
the temperature level above the current room
temperature
Check for 24VAC between the cooling terminal (Y)
and the transformer common. If 24VAC is present,
the thermostat is functional. Check the cooling
system to find the cause of the problem
“
COOꢀINꢁ” IS NOT DISpꢀAYED
• Check Installer System Setting number 05
(
Control Setup) is set correctly.
Check for loose or broken wires between the
thermostat and the cooling equipment
• Change the System Mode to Cool, and set
the temperature level below the current room
temperature
1
6
17