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5) WIRES ‐ There are several wire clips that need to be removed to free the heat exchanger
a. Blue wired clips to the left of the heat exchanger, held by a clip on the copper pipe
b. Flame sensor (orange), AFR(yellow), and igniter (black) wires
c. Screw holding green ground on the top left of the manifold plate
d. Thermistor clip on left of the heat exchanger
e. Blue heating block wire on right side
Figure 36
6) FAN
a. The fan is held in by two screws. Slide it left to release it from the grooves.
Left HX items
Center PCB screws
Figure 37
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Troubleshooting Guide
Right HX items
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