We got an emergency call from a customer who after returning home from a short vacation found all the food in the fridge spoiled because of the non-working fridge. Our tech removed the back cover to check the compressor - it was cold. The inverter board WR49X10283 was getting 120VAC and floating power from 0 VAC to 3.6VAC from signal wire from main control board. From the inverter board WR49X10283, however, the compressor was not getting 230VAC, 150Hz. This was a sign that the inverter board WR49X10283 was defective. Since all the fans were working properly, the control board was not causing any issues so the only option was replacing the inverter board WR49X10283. Once this was done, the compressor started working again and the fridge started cooling.
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This customer’s Nu-Vu UB-5/10 Bread Oven stopped working. At first glance, everything seemed to be working fine, but with a more thorough check the tech noticed that the control board was not getting 208V power. He had to pull up the the whole power supply diagram before doing any further work. Once he was familiar with that, he started checking the wires and was finally able to find the disconnection and fix it. Most likely, one of the wires was simply defective.
We got a call for commercial order from the Indian Street Cafe. They needed urgent help with their TurboAir fridge that had stopped working properly. During the diagnostic our technician noticed a big chunk of ice that has accumulated on the evaporator coil. Apparently the seal of the fridge was not airtight anymore. Replacing the door gaskets and the defrost sensor fixed the defrosting problem of TurboAir M3R47-2 fridge.
Whenever the customer was trying to get some water from the water dispenser of his GE fridge, there was scary loud humming noise which seemed to be coming from where the water filter is connected. Our tech decided to try replacing the Refrigerator Water Filter Head Assembly Part #: WR17X11894 - and it fixed the problem. With the new water filter assembly the humming noise during water dispensing has stopped.