Responded to service call for 40-gallon Whirlpool water heater with pilot light failure. Diagnosed faulty high limit switch after attempting thermal couple replacement with multiple units. Parts have been identified and will be ordered for follow-up repair.
Technician reconfigured network box that was previously installed but experiencing pairing issues. Adjusted equipment settings and verified proper operation of the digital thermostat system, which now correctly displays temperature readings and set points (67° current, 68° heating, 78° cooling).
Responded to customer callback regarding furnace startup issue with error code 125 (control hardware error). Upon arrival, confirmed error had cleared and system was heating properly. Diagnosed error code 21 indicating communication loss and replaced E30 thermostat control unit. Customer had reported faint gas smell, which was investigated during service to ensure safe operation.
Responded to a gas leak service call where customer had gas shut off to home due to leak from corner joint. Upon inspection, found faulty main brass core valve was the source of the leak. Removed old damaged valve and installed new replacement valve. Performed pressure test after installation to verify repair integrity and confirm no further gas leaks present.
