Advanced Troubleshooting

 

 

 

 

Specific Problem

Cause

 

Solution

 

 

 

 

 

 

Basic electrical problems

Motor overheated

Allow motor to cool for 30 minutes. Retry.

 

 

 

 

Electrical outlet is damaged

Reset building circuit breaker or replace building

 

 

fuse. Try another outlet.

 

 

Check electric supply with volt meter. Meter must

 

 

read 200-260V AC. If voltage is too high, do not

 

 

plug sprayer in until outlet is corrected.

 

 

 

 

Control board leads are

Replace any loose terminals. Make sure all leads

 

improperly fastened or

and harnesses are firmly connected.

 

improperly mated

Check pressure control harness connection on

 

 

front side of drive housing.

 

 

Clean control board terminals. Securely reconnect

 

 

leads.

 

 

 

 

 

Motor brushes are worn.

Check length of BOTH brushes (brushes do not

 

 

wear evenly on both sides of the motor). Brush

 

 

length must be 6.4mm (0.25 in). If brushes are

 

 

worn replace motor using Motor Kit, page 18.

 

 

 

 

Motor armature commutator

Check for burn spots, gouges and extreme

 

damaged

roughness. Have motor shop resurface

 

 

commutator if possible, or replace motor using

 

 

Motor Kit, page 18.

 

 

 

 

Motor armature shorting

Check for shorts using armature tester (growler)

 

 

or perform spin test, Motor Diagnostic, page 19.

 

 

If shorts are evident, replace motor using Motor

 

 

Kit, page 18.

 

 

 

 

Control board damaged.

See Control Board Diagnostics, page 19.

 

CAUTION: Do not perform

Replace control board if damaged using Control

 

control board diagnostics until

Board Kit, page 18.

 

you have determined the

 

 

 

armature is good. A bad

 

 

 

armature can burn out a good

 

 

 

control board.

 

 

 

 

 

 

Sprayer Wiring Problems

Sprayer electrical cord

1.

Unplug sprayer electrical cord.

NOTE: Remove enclosure

damaged

2.

Disconnect black electrical cord wire at

mounting screws and pull

 

 

power switch

enclosure away from drive

 

3.

Unplug in-line connection white cord wire.

housing. Take care not to pull

 

4.

Plug in electrical cord

on leads from electrical cord

 

5.

Test voltage between black and white

and power switch.

 

 

wires. Meter must read 200-260 V AC.

 

 

6.

Replace electrical cord if no voltage.

 

 

 

 

 

Sprayer power switch damaged

1.

Unplug sprayer electrical cord.

 

 

2.

Disconnect black control board wire at

 

 

 

power switch.

 

 

3.

Unplug in-line connection white cord wire.

 

 

4.

Plug in electrical cord.

 

 

5.

Turn power switch ON.

 

 

6.

Test voltage between open terminal of

 

 

 

power switch and white electrical cord wire.

 

 

 

Meter must read 200-260 V AC.

 

 

7.

Replace power switch if no voltage.

 

 

 

 

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Image 12
Haier 232738 specifications See Control Board Diagnostics