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F-11 F-11
TROUBLESHOOTING & REPAIR
MULTI-SOURCE
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6. Carefully apply primary power and test for
the correct secondary voltages. See Table
F.1.
NOTE: If the correct main AC input power to
the Control Transformer is present, and the
secondary voltages are not correct, the Control
Transformer may be faulty. Replace.
TABLE F.1.
Primary H1 & H2
Voltage
Approximate Secondary
Voltage X1-X3
575 VAC
Approximate Secondary
Resistance (X1-X3)
460 VAC
380 VAC
34.50 VAC
28.50 VAC
0.5 Ohms
60 Ohms
Approximate Primary
Resistance (H1-H2)
X2-X3 Thermostat
0 Ohms
43.0 VAC
CONTROL TRANSFORMER (T2) VOLTAGE TEST