ROOM AIR CONDITIONER VOLTAGE LIMITS

NAME PLATE RATING

MINIMUM

MAXIMUM

 

 

 

115V ± 10%

103.5V

126.5V

 

 

 

COMPLAINT

CAUSE

REMEDY

 

 

 

 

Fan motor will not run.

No power

Check voltage at outlet. Correct if none.

 

 

 

 

 

Power supply cord

Check voltage to rotary switch. If none, check

 

 

power supply cord. Replace cord if circuit is

 

 

open.

 

 

 

 

 

Rotary switch

Check switch continuity. Refer to wiring diagram

 

 

for terminal identification. Replace switch if

 

 

defective.

 

 

 

 

 

Wire disconnected or

Connect wire. Refer to wiring diagram for

 

connection loose

terminal identification. Repair or replace loose

 

 

terminal.

 

 

 

 

 

Capacitor (Discharge

Test capacitor.

 

capacitor before testing.)

Replace if not within ±10% of manufacturer's

 

 

rating. Replace if shorted, open, or damaged.

 

 

 

 

 

Will not rotate

Fan blade hitting shroud or blower wheel hitting

 

 

scroll. Re-align assembly.

 

 

Units using slinger ring condenser fans must

 

 

have 0.22~0.25 inch clearance to the base.

 

 

If necessary, shim up the bottom of the fan motor

 

 

with mounting screw(s).

 

 

Check fan motor bearings; if motor shaft will not

 

 

rotate, replace the motor.

 

 

 

 

Fan motor runs.

Revolves on overload

Check voltage. See limits on this page.

 

 

If not within limits, call an electrician.

 

 

Test capacitor.

 

 

Check bearings. Does the fan blade rotate

 

 

freely?

 

 

If not, replace fan motor.

 

 

Pay attention to any change from high speed to

 

 

low speed. If the speed does not change,

 

 

replace the motor.

 

 

 

 

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Friedrich ZQ07B10, ZQ05B10 manual Room AIR Conditioner Voltage Limits