A.O. Smith WHC1226-CNT-00 Hot Water Tank Control Board
Repair
Repair Price: $ 794.00
Purchase
CSL Part Number: 109191
Product Overview: The A.O. Smith WHC1226-CNT-00 is a control board designed for commercial hot water tanks rated at 199,000 BTU. It manages ignition sequencing, flame sensing, and operational safety functions for gas-fired water heaters. Commonly found in Rheem and A.O. Smith commercial units, it controls the igniter circuit, relay operations, and system diagnostics. The board operates on 24VDC relay control and includes current sensing transformers for monitoring heater performance and fault detection.
Category: Control Board
Manufacturer: A.O. Smith
Alternate Manufacturer Names: Rheem
Manufacturer Part Number: WHC1226-CNT-00
Also Known As(AKA): 400B0164 REV F, SP12186
Other Synonyms: Rheem
CONTROL BOARD FOR 199,000 BTU COMMERCIAL HWT
Common Failures
Common issues with this product include blown resistors, defective relays, and faulty solder joints. Some devices also experience overheating and subsequent damage in the igniter circuit. An error message such as "Igniter LOC" may indicate open trace issues or components in the igniter circuit drawing excessive current.
Repair Approach
Repairs may involve resoldering connections, performing trace repairs, and replacing defective relays and transformers as needed. Solder joint reflows and conformal coating maintenance are performed routinely. In cases of overheating, the igniter circuit's components are evaluated and replaced if necessary, and the output connector is tested and repaired if required.
Testing & Quality
Post-repair, products undergo diagnostic testing including checks with Huntron and DMM, as well as burn-in tests where possible. Multi-level testing ensures that components such as diodes and crystals are functioning correctly. Final application-level testing, particularly for the igniter circuit, may need to be completed by the customer due to limitations in simulating full operational conditions during repair diagnostics.
Service and repair your broken A.O. Smith part
We can repair your A.O. Smith model WHC1226-CNT-00 in our facility. Let our skilled technicians get your A.O. Smith back in operation quickly.
Step 1 - Click the green 'Repair Now' button above to add the part and then complete the RMA.
Step 2 - The RMA form will be sent to you via email. Print the RMA form and put it in a box with the item(s) for repair.
Step 3 - Ship or mail the box to the address listed on the RMA.
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