ULTRA HIGH EFFICIENCY POWER VENT/POWER DIRECT VENT - SERVICE MANUAL
CCB
The CCB circuit board is the main control. All instructions for ignition and temperature control originate from this circuit board. Diagnostic and operational messages are generated by the CCB and sent to the UIM (page 27). Most of the water heater’s components, such as the igniter, blower, gas valve, and temperature probe are directly connected to one of the CCB’s socket connectors.
Service Notes - CCB Replacement
If the CCB fails and needs to be replaced the replacement board will be shipped with the gray plastic enclosure and a new 24 VAC transformer. There is no need to remove the circuit board from the enclosure when the CCB is being replaced.
Enclosure With Front Removed
CCB Circuit Board
Transformer 120V x 24V 50 VA
Technical Literature Department | 35 of 52 | Ashland City, TN © 2008 |
Servicing should only be performed by a Qualified Service Agent |
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