5-12
CONTROL TRANSFORMER
Electrical Shock Hazard
Disconnect power before servicing.
Replace all parts and panels before operating.
Failure to do so can result in death or electrical shock.
Unplug dryer or disconnect power.
Turn off gas supply to dryer.
Remove the transformer (See page 4-54).
NOTE: Control transformers are only in
stack dryers. Electric stack dryers have
one control transformer and one step
down transformer, gas stack dryers have
one control transformer and two auto
transformers.
1.
2.
3.
Set ohmmeter to the R X 1 scale.
Set digital ohmmeters to lowest scale.
Touch the meter test leads to the following
terminals in transformer secondary 8-pin
connector (shown below).
Red to Red = 28.5 VAC and 11 Ω.
White to White = 22.5 VAC and 1.6 Ω.
Blue to Blue = 5 VAC and 0.3 Ω.
Yellow to Blue = 2.5 VAC and 0.1 Ω.
Touch the meter test leads to the following
terminals in transformer primary 2-pin
connector.
Black to Black = 120 VAC and 29 Ω.
4.
5.
6.
Primary 2-pin
Connector
Secondary 8-pin
Connector
Yellow Blue White Red
Blue White Red
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