Maytag 111990" Automatic Dryers Service Manual page 22

2. Another method for testing is to
bypass the Heater Relay.
A. Disconnect power supply.
B. Remove wire connectors BK and
BK (wire connectors are insulated,
jumper wire will have to be used).
C. Connect power supply. If
heating element is energized, relay
has failed, replace relay.
CAUTION
Always disconnect power supply
before making continuity or
resistance checks.
3. Check for continuity across 160 0
Limit Thermostat (when cool). No
conti nUity, replace thermostat.
4. Check for continuity across Hi-Limit
Thermostat. No continuity, replace
thermostat.
Note: When checking continuity or
resistance always isolate what you
want to check.
5. Check for continuity or resistance
across the Heater (heating element).
Should see about 11 ohms (240 volt
element), about 8 ohms (208 volt
element) when checking resistance.
No continuity, replace heating
element.
6. Check continuity across centrifugal
$witch on motor switch.
A. Remove wire connectors BU and
BK from motor switch.
B. Attach meter leads across termi-
nals SU and BK on switch.
C. Use small screwdriver to move
centrifugal lever on the drive motor
to the "run" position.
D. Check for continuity across ter-
minals BU and BK, no continuity,
replace motor switch.
HEA T CIRCUIT FOR THE GAS DRYER
No heater control relay is placed in
series with the gas valve on the gas
dryer. The control for this circuit is
done on the microprocessor board
itself. The L 1 side of the power supply
is routed to the microprocessor board
through edgeboard connector SB (refer
to schematic). The microprocessor
board determines when the gas valve
should be energized and relays L1 back
through edgeboard connector BB and
completes the circuit for the gas valve.
Will not heat (gas dryer):
CAUTION - - - - - - - - - - - ,
Always disconnect power supply
before making continuity or resist-
ance checks.
1. Check continuity across 160
0
Limit
Thermostat (when cool). No conti-
nuity, replace.
CAUTION - - - - - - - - - - - - - - - - - - - - - - - . ,
Always disconnect power supply before making any continuity checks or
resistance readings.
ED/GD401 1090 SECTION 2. ELECTRICAL - MECHANICAL TROUBLESHOOTING
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