Frigidaire 134969500B(0810) Benutzerhandbuch

Motor runs but

drum does not

operate

Drum operates

but is noisy

Motor will not

stop

Motor does not

start

Slow drying-

improper drying

Clothes not

drying on auto-

dry setting

Drum turns but

heat does not

come on

Element burns

out frequently

The resistor

, located in the thermostat heater circuit,

causes the thermostat heater to generate varying

amounts of heat. Resistors are connected to the

timer or selector switches. Refer to the applicable

wiring diagram.

Resistors are checked with an ohm meter and

resistor values are marked on the schematic wiring

diagram. 

A

 bad resistor will give improper drying

temperatures.

The thermostat and bias heater are located on the

blower housing.

Remove harness wires from the thermostat.

Determine the interior wiring by referring to the wiring

diagram. Use an ohm meter to check the

thermostats.

1

.
Remove the exhaust venting from the rear of

dryer

. Place a thermometer (pocket type

reading at least 300° F

.) in rear of exhaust pipe.

If dryer is installed between cabinets, making

rear access difficult, the temperature can be

checked by placing a thermocouple in the lint

trap opening. Thermocouple shall be located

one inch to the right of lint screen opening center

line and extend three inches below the top of

opening.

2

.
Set timer for 30 minutes, or long enough to

permit cycling of thermostat.

3

.
Allow thermostat to cycle 3 or 4 times.

4

.
Check temperature immediately after the third

or fourth cycle of thermostat. The temperatures

(depending on the temperature setting) should

conform to those listed in the 

T

emperature

Chart.

-

A

T

 EXHAUST

 DUCT

-

 N

O

 LOAD

OR LINT TRAP

HIGH

145-190° F

.

MEDIUM

2-10° F

. lower than high heat

L

O

W

2-10° F

. lower than medium heat

The hi-limit thermostat, single-pole, single throw

switch wired in series with the control thermostat

and heat source, is mounted to the top of the heater

housing.  Should the control thermostat fail or an

air blockage occur

, raising the heater housing

temperature to 260° F

. on electric or 240° F

. on

gas., the hi-limit thermostat opens the circuit to

the heat source and allows the heater housing to

cool down to 190° F

.

T

o

 check the thermostat, remove drum. 

T

o

 check

for stuck contacts in the thermostat, start the dryer

and run on HIGH heat 

. The hi-limit thermostat MUST

open within three minutes.

T

o

 check for an open thermostat, remove the

harness wires from the thermost

at terminals. 

T

est

for continuity

. Y

ou should have continuity through a

good thermostat at room temperature.

The safety thermostat is wired in series with the

motor for ELECTRIC MODELS and the burner for

GAS MODELS. The purpose of the safety

thermostat is to shut down the dryer if the control

thermostat and hi-limit thermostat fail to open. Once

the safety thermostat has opened, it must be

replaced. The condition that caused it to open must

be corrected.

The heater assembly (208/240 volts) is located

behind the drum. Perforations in the drum back allow

heated air to be drawn into the drum.

The heater is an open coil type heater made from a

continuous coil of resistance wire attached to a metal

support plate with ceramic stand offs.

Heater Assembly 

T

esting:

1

.
Disconnect Laundry Center from electrical

supply

.

2

.
Remove drum.

3

.
Remove leads to the heater element.

4

.
Connect ohmmeter across heater element

terminals.

5

.
Check each terminal to ground.

6

.
If open or grounded, replace heater element.

T

o

 Remove or Replace Heating Element:

1

.
Disconnect Laundry Center from electrical

supply

.

2

.
Remove drum.

3

.
Disconnect wires from safety thermostat, hi-

limit thermostat, and ceramic insulator

.

4

.
Remove four screws securing heating element

assembly to rear p

anel and remove assembly

.

5

.
Install new heating element.

6

.
Reverse procedure to reassemble.

T

he ignitor is a silicon thermistor

.  When it attains

appr

oximately 1800 F

, the sensor (mounted on the

side of the burner tube) detectes this high radiant

heat and opens its contacts.

This energizes the secondary solenoid valve coil,

allowing gas to flow through the gas valve orifice

and impinge upon the hot glowing ignitor

.  The total

sequence occurs within

15 to 90 seconds.  The igniter is mounted to the

burner at an angle with the silicon carbide stem

extended into the flame area.  The stem is very fragile

and susceptible to contamination from skin oils.

 by using the ignitor's insulated

support.

To

 test the ignitor:

1

.

Disconnect Laundry Center fr

om electrical supply

.

2

.

Remove the dryer access panel and safety cover

.

3

.

Disconnect plug connector fr

om ignitor

-to-coil

     harness.

4

.

Check r

esistance value of ignitor

.  It should be

approximately 50 to 800 Ohms depending on the

     room temperature.

To

 r

eplace 

ignitor:

1

.

Disconnect Laundry Center fr

om electrical supply

.

2

.

Remove bur

ner assembly

.

3

.

Remove bur

ner tube fr

om bur

ner assembly

.

4

.

Remove the 1/4" hex head screw and washer

securing ignitor to its mounting bracket.

5

.

Reverse procedure to reinstall.

Whenever the door is opened, the door switch will

open the circuit to the motor and the external switch

in the motor will open the circuit to the heat source.

The driv

e motor is 1/4 H.P

., 1725 RPM with

automatic reset o

v

er

load protector

.

1

.

Disconnect electrical current and remove

ventilation panel. Remove harness wires from

motor

.

2

.

Operate motor by connecting a properly fused

ser

vice cord to ter

minals 4 and 5.

 The motor

should star

t and run.

3.
If motor runs, problem is open circuits in the dryer

electrical or control system. If motor does not

run, check the centrifugal switch.

4

.

When motor r

uns and the prob

lem is NO HEA

T

,

check continuity between terminals 1 and 2 with

the switch button out (run position).

No continuity shows the switch is inoperative.

Replace motor

.

T

o

 Remo

v

e

 or Replace Dr

y

e

r Dr

iv

e Belt:

1

.

Disconnect Laundr

y

 Center from electr

ical supply

.

2

.

Remo

v

e

 front panel and air duct assemb

ly

.

3.
Disconnect belt from idler pulle

y and motor pulle

y.

4

.

Remove belt from dryer drum.

5

.

Install new belt.

6

.

Reverse procedure to reassemble.

Broken or loose belt

Loose motor

, idler pulley

, or

spring

Drum out of shape

Worn idler pulley

Belt squeaking or frayed

Motor (bearing), motor pulley

loose, blower

Drum seals worn

Incorrect wiring

Grounded motor or wiring

Grounded heat element

Faulty timer

Open timer resistor

Blown fuse

Timer or motor inoperative

Housing wiring not properly

connected to dryer

Inoperative door switch

Faulty “Push to S

tart” switch

Blocked or plugged lint collector

,

blower housing or vent pipe

V

e

nt pipe too long

Clothes too wet when put in dryer

Dryer is overloaded

Drum set is worn or out of

position

Door gasket not sealing correctly

Control or safety thermostats

inoperative

House voltage fluctuating or low

Customer selected wrong timer

setting

Inoperative resistor

Inoperative control thermostat

Inoperative heating element

Inoperative heating element

Inoperative timer

Loose terminals-tighten

connections

Inoperative control or safety

thermostat

Inoperative motor switch

Broken wire in wiring harness

Worn drum seals. Replace

Connections not tight at element

terminals

Reduced air flow

. Check for

proper installation &

maintenance of duct work. (See

Installation Instructions)

ALL

 P

A

R

TS OF 

THIS 

APPLIANCE CAP

ABLE

OF CONDUCTING ELECTRICAL CURRENT

ARE GROUNDED. IF GROUNDING WIRES,

SCREWS, STRAPS, NUTS OR WASHERS

USED T

O

 COMPLETE 

A

 P

A

TH T

O

 GROUND

ARE REMOVED FOR SERVICE, THEY MUST

BE RETURNED TO THEIR ORIGINAL

POSITION AND 

PROPERL

Y

 F

ASTENED.

On electric model dryers, air is drawn into the heater

housing and across the open coils of the electric

heater

. On gas model dryers, air is drawn into the

combustion chamber and over the burner flame.  It

then is drawn through the tumbling clothes, picking

up moisture and lint. Lint is filtered out as the air

passes from the drum into the blower where it is

discharged out the vent. The air temperature is

controlled by the biased thermostat according to

the setting of the fabric selector switch. The length

of the drying cycle is controlled by the number of

minutes selected on the timer

, or automatically

controlled by the timer

, in conjunction with the

electronic moisture sensor

, for the type of fabric

selected (automatic dry cycle).

T

o

 operate the dryer

, first check the lint screen and

be certain that the screen is completely free of all

lint. Place clothes in dryer and close door

. (Dryer

will not operate unless door is closed.)

1

.
Select the drying time, or automatic drying

cycle, by turning timer knob to the right.

2

.
Set drying temperature using timer for the type

of fabric being dried.

3

.
T

o

 start the dryer

, turn the st

art knob to the

right and hold for 2 seconds.

48-54 RPM in a counterclockwise direction as

viewed from the front.

P

A

RT
 NO. 134969500B (0810)