Friedrich WallMaster WCVT12B30A Handleiding (90 Pagina's)

Handleiding

73 73

COMPONENT TESTING

Compressor Checks

WARNING

ELECTRIC SHOCK HAZARD

Turn off electric power before service or

installation.

All electrical connections and wiring MUST be

the National Electrical Code and all local codes

which have jurisdiction.

Failure to do so can result in personal injury or

death.

BURN HAZARD

Proper safety procedures must be followed,

and proper protective clothing must be worn

when working with a torch.

Failure to follow these procedures could

result in moderate or serious injury.

WARNING

Resistance Test.

1. Access the main PCB.

2. Locate and disconnect the motor winding leads shown in the gure

below.

U= Blue V= Yellow W= Red

3. Using an OHM Meter, check resistance from U to V, U to W, and V to to W.

All of the readings should be within 0.1 ohms of each other.

A difference of more than 0.1 ohms indicates that windings may be

damaged and the compressor should be replaced.

NOTE: Actual OHM values may vary due to temperature of the

compressor.

4. Using a MegOhm Meter, check the motor windings for a short to ground.

Measure the resistance of each winding to ground.

A reading of less than 10 Megohms indicates that the motor

windings may be damaged and the compressor should be replaced..

U

W

V

EH2

RELAY

BLU

YEL

RED

U

W

V

RV1

EH1

RELAY

RV1

RELAY

RE-400

RE-401

RV2

L2/N

GND

L1/L

HARNESS

COMP WIRE

Figure 703

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