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TESTING & TROUBLESHOOTING
Component Readings
Fan Motor And Blower Wheel
The blower wheel and fan motor are considered to be one
complete assembly . Therefore, if the motor is determined to
require replacement, the blower wheel must be replaces as
well .
Part # MPSM07 (03/24/08)
Garland sets the wheel at the factory with a specifi c gap
setting.
Spritzer
Solenoid
Valve Coil
Resistance
22 Ω
Dual Stage Gas
Valve
Solenoid
Resistance
Pilot Valve = 28 .5 Ω
Main Valve = 28 Ω
GROUND
5
Minimum Acceptable
LED
THS 2
M.V. 3
SENSE 4
Board Transformer
Direct Spark
Ignition Module
3 Trials
4 Seconds Per Trial
No Retry
µa Reading ≥ 0 .3
Heat & Control
Primary = 21 .5 Ω
Secondary = 1 .5Ω
Page 53
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