FRIGIDAIRE 134969500B(0810) - Manual

CAUTION: T
O
SER
VICE MACHINE, POWER MUST BE DISCONNECTED!
DRYER TROUBLESHOOTING
PROBLEM 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
RESISTORS 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. CONTROL
THERMOST
A
T
The thermostat and bias heater are located on the blower housing. CHECKING THE CONTROL THERMOST
A
T
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
TRIP TEMP
SETTING HIGH
145-190° F
.
MEDIUM
2-10° F
. lower than high heat
L
O
W
2-10° F
. lower than medium heat
NOTE: LONG EXTENDED VENTS AFFECT DRUM TEMPERA
TURES.
HI-LIMIT THERMOST
A
T
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
with the exhaust duct
completely blocked
. 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. SAFETY THERMOST
A
T
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. HEA
TER ASSEMBL
Y
(ELECTRIC ONL
Y)
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.
IGNIT
O
R
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. HANDLE WITH CARE
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.
DOOR SWITCH 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. CHECKING THE
MO
T
O
R
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
.
D
R
YER DRIVE BEL
T
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.
WHA
T T
O
LOOK FOR
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)
CAUTION
THIS MACHINE MUST BE
ELECTRICALL
Y
GROUNDED
It can be grounded thru the ground lead in the 4-prong power cord, if plugged into a properly grounded appliance outlet or thru a separate No. 12 or larger wire from the cabinet to an established ground. In all cases, the grounding method must comply with any local electrical code requirements.
IMPORT
ANT - RECONNECT
ALL
GROUNDING DEVICES
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.
OPERA
TION - DR
YER
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.
DRUM SPEED 48-54 RPM in a counterclockwise direction as viewed from the front.
P
A
RT
NO. 134969500B (0810)