39
Q:
The condenser will not start although indoor unit
appears normal. What should I do?
a:
Check Breaker
Q:
How long will the fan run?
a:
While the unit is in cooling or heating and auto fan
mode is selected, Fan speed is determined by microproces
-
sor, speed adjustment is made according to room and set
-
point temperatures. Fan switches to High speed when room
temperature deviates by more than 1 degree from setpoint.
Fan will switch to Low speed if deviation is 1 degree. When
room temperature reaches setpoint temperature heat/cool
call is dropped. Fan stays on for additional 60 seconds to
purge unit of any residual energy. If High or Low is selected
fan will operate continuously regardless of set point or
room temperatures.
Q:
What causes my indoor unit to freeze-up?
a:
Units are equipped with freeze protection to prevent
freeze up from occurring. If freeze up does occur check the
following.
• Check freeze sensor is located in lowest part of coil.
Generally this is where freeze up begins.
• Check freeze sensor is inserted fully and snug in coil
fin. If not another location may need to be selected.
Take care not to insert sensor directly into coil tube,
insert sensor between two tubes.
• Check indoor air filter. Check coil is clean. If dirty,
clean using appropriate coil cleaner or mild detergent.
• Is equipment being operated in cooling mode when
outdoor temperatures are below 32°F? If it yes, have
condenser fitted with low ambient control so proper
system pressures are maintained.
• Does system have proper refrigerant charge?
System low on refrigerant can cause air handler
freeze-up. Contact a qualified refrigeration service
technician to check system charge. Refrigerant charge
information can be found in Installation, Operation and
Maintenance Manual for outdoor condensing unit.
fREqUEnTLY ASkED qUESTIonS
