Friedrich CP14N10 用户手册

15

Compressor runs for 

short periods only. 

Cycles on overload

Overload inoperative. Opens too soon

Check operation of unit. Replace overload if system 
operation is satisfactory

Compressor restarted before system pressures 
equalized

Allow a minimum of 2 minutes to allow pressures 
to equalize before attempting to restart. Instruct 
customer of waiting period

Low or fl uctuating voltage

Check voltage with unit operating. Check for 
other appliances on circuit. Air conditioner should 
be in separate circuit for proper voltage & fused 
separately

Incorrect wiring

Refer to appropriate wiring diagram

Shorted or incorrect capacitor

Check by substituting a known good capacitor of 
correct rating

Restricted or low air fl ow through condenser coil

Check for proper fan speed or blocked condenser

Compressor running abnormally hot

Check for kinked discharge line or restricted 
condenser. Check amperage

T-stat does not 

turn unit on

Loss of charge in t-stat bulb

Place jumper across t-stat terminals to check if unit 
operates. If unit operates, replace t-stat.

Loose or broken parts in t-stat

Check as above

Incorrect wiring

Refer to appropriate wiring diagram

Noisy operation

Poorly installed 

Refer to Installation Manual for proper installation

Fan blade striking chassis

Reposition - adjust motor mount

Compressor vibrating

Check that compressor grommets have not 
deteriorated. Check that compressor mounting parts 
are not missing

Improperly mounted or loose cabinet parts

Check assembly & parts for looseness, rubbing & 
rattling

Water leaks into the 

room

Evaporator drain pan overfl owing

Clean obstructed drain trough

Condensation forming on base pan

Evaporator drain pan broken or cracked. Reseal or 
replace

Poor installation resulting in rain entering the room

Check installation instructions. Reseal as required

Condensation on discharge grille louvers

Clean the dirty evaporator coil. Use pressure wash 
or biodegradable cleaning agent to clean

Chassis gasket not installed

Install gasket, per Installation manual

Downward slope of unit is too steep

Refer to installation manual for proper installation

Cooling Only Room Air Conditioners: Troubleshooting Tips