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1. No Display Condition
A. Check position of emergency stop to verify it is in operating position (pull or twist for operating
position).
B. Check fuse one or two and if either are blown, replace
C. Take voltage reading across the microprocessor (J7) 9-pin connector pins 1 and 2. If no voltage
is present at pins 1 and 2, double check the secondary (24VAC) side of transformer at the blower
motor contactor number 13 to ground if no voltage is present check primary voltage to trans-
former.
D. Check voltage across fuses 1 and 2 to ground. If voltage is present, check emergency stop red
and black wire to ground. If voltage is present, check voltage across 95 and 96 to ground of the
drive motor overload. If voltage is present, check 95 and 96 to ground of the blower motor
overload. If voltage is present and transformer terminations are good, then the transformer is bad.
Refer to the schematic supplied with the dryer to assist in the troubleshooting of the dryer.
NOTE : In this next section all voltage checks must be done in the operating mode with the appropriate
microprocessor dot on. Also appropriate L.E.D. output light on.
NOTE: In this next section when checking for voltage you are looking for 25 AC volts unless otherwise
specified.