Component Electrical Testing; Thermistor Resistance; Heater Check Including Thermostats; Motor Check - Maytag MDE2400AY Series Service Manual

Troubleshooting Procedures
To avoid risk of electrical shock, personal injury or death, disconnect power to unit before servicing, unless testing
requires power.

Component Electrical Testing

Thermistor resistance 60k ohms.

Heater check including thermostats.

POWER HEATER
Disconnect harness and
test White wire Pin 2 on
Heater Relay to Blue wire
Pin 1 on Power Relay.
Approx 26 ohms ± 5%
12
!
WARNING

Motor check.

240VAC
H e a t e r
Heater check.
Input
To check the heating element only, disconnect the red
wire from the thermostat and check across the red wire
and the blue wire on the power relay. Heater resistance is
approximately 26 ohms. To check the heating element
and thermostats from the console, check across the blue
wire on the power relay and the white to the heater relay
with the connector removed.
POWER HEATER
Red wire Pin 1 on
Heater Relay to
Black wire Pin 2 on
Power Relay
16023432 Rev. 0
Disconnect harness and
test White wire Pin 2 to Red
wire Pin 1. Approx 35 ohms
± 10%
1 2 3
Disconnect harness and test
Blue wire Pin 3 to White wire
Pin 2. Approx 29 ohms ± 10%
CN2
Resetable Thermal
High Limit Thermostat
Fuse
Less than 1 ohm
Less than 1 ohm
Heater Power
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