Friedrich Kuhl KCQ06A10A, Руководство по обслуживанию и запасным частям

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64 PB
TROUBLESHOOTING
COMPLAINT CAUSE SOLUTION
Water “spitting” into room
Sublimation:
When unconditioned saturated, outside
air mixes with conditioned air, conden -
sation forms on the cooler surfaces
Ensure that foam gaskets are installed in
between window panes & in between the unit &
the sleeve. Also, ensure that fresh
air/exhaust vents (on applicable models) are in
the closed position & are in tact
Downward pitch of installation is too
steep towards back of unit
Follow installation instructions to ensure that
downward pitch of installed unit is no less than
1/4” & no more than 3/8”
Restricted coil or dirty fi lter
Clean & advise customer of periodic cleaning &
maintenance needs of entire unit
Excessive moisture
Insufficient air circulation thru area to
be air conditioned
Adjust louvers for best possible air circulation
Inadequate vapor barrier in building
structure, particularly fl oors
Advise customer
Unit short cycles
Defective thermistor Replace thermistor or electronic control board
Unit oversized See sizing chart. Correct as needed.
Chassis seal gasket not sealing or
absent causting unit to short cycle
Check gasket. Reposition or replace as needed
Restricted coil or dirty fi lter
Clean & advise customer of periodic cleaning &
maintenance needs of entire unit
Prolonged off cycles
Defective indoor ambient thermistor or
electronic control board
Check alarms. Replace thermistor or electronic
control board
Outside water leaks
Evaporator drain pan cracked or ob -
structed
Repair, clean or replace as required
Obstructed condenser coil
Use pressure wash or biodegradable cleaning
agent to clean
Fan blade/slinger ring improperly
positioned
Adjust fan blade to 1/2” of condenser coil fi n
pack
Room temperature uneven
(Heating cycle)
Bad indoor ambient thermistor
Check diagnostic codes. Check Thermistors.
Replace as needed.
Fan speed too low Set at higher fan speed.
Does not heat adequately
Dirty filter Clean (See Routine Maintenance)
Unit undersized
Check heat rise across coil. If unit operates effi
ciently, check if insulation can be added to attic
or walls. If insulation is adequate, recommend
additional unit or larger one
Heater hi-limit control cycling on & off
Check for adequate fan air across heater. Check
for open hi-limit control.
Shorted or open supplementary heater Do ohmmeter check.
Incorrect wiring Check applicable wiring diagram
Tips continued