The equipment in this month’s troubleshooting problem is a forced-air electric heating system with five resistance-type elements, and in order to ensure that this equipment can operate with maximum efficiency and prevent an electrical system overload on a call for heat, a multiple-step sequencer system employed.
In this month’s troubleshooting problem, the equipment that needs servicing is a split system heat pump, manufactured under the brand name Grandaire (ICP, Lewisburg, Tennessee). The indoor unit model number is WAPT304A2, and the outdoor unit model number is WCH5304KGA100. This is a 2.5-ton unit in a residential installation.
Over and over again, I have heard HVACR technicians and electricians quote rules of thumb regarding wiring sizing, and I have witnessed and participated in many heated debates on the topic.
I created this service call to help technicians understand flooded unit repair. Dedicated to technicians after Hurricane Harvey and Hurricane Irma — I hope it helps. Good luck.
This month’s troubleshooting situation centers around a standard natural gas, induced draft, hot surface ignition system furnace. This is a new installation that has been accomplished in anticipation of the upcoming heating season, and the problem is that during the initial start-up, the unit did not perform properly.
Bob and Tim are at a new customer’s job site. It’s an older, free-standing restaurant, and the complaint is that the ductwork is dripping water into the customers’ food.
The equipment in this month’s troubleshooting situation has been around a while. Installed in 1999, the unit is a Nordyne brand, Model #S3BA-60K, and the customer requesting service explained to the dispatcher that they have had to replace fuses in the disconnect several times.
Bob and Tim were on a service call at a new customer’s house. The complaint was that the humidity in the house seemed to be high because mold was growing — shoes in closets and wooden object were the worst. The summer weather was very hot, and there was also high humidity.
This month’s troubleshooting situation involves an air-to-air package unit heat pump that is approximately nine years old, and the customer’s complaint is that rather than providing cooling, it’s just blowing warm air.
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