It would take multiple buttons pushes to get my thermostat to switch mode, and it got frustrating. With thermostats that still work but don’t respond to buttons well, here’s the Before bending, try switching the two brass contactors, one switch at a time. Roger Kittelson, F88803, Whitney, Texas Only the outside arms on the right side are in the circuit. To correct this problem, push in on one end of each arm to make a sharper kink in the arm, thus shortening it enough so that it will make contact with the switch when the button is depressed after the unit has been reassembled. The problem is that over time, the bend in the arm has straightened just enough so that it does not make contact with the solid back when the button is depressed. Notice the small elbow bend in each of the arms. Lay the brass piece on its solid side with the three legs up. Observe carefully so you know how to replace them when ready. There are two brass pieces inside each switch that you must individually remove. (Longer clip toward the on-off switch spring goes onto the peg.) Carefully lift the button from the base. Carefully release the clip on each side of a button, holding the button so it won’t pop off. Remove the four screws holding the cover on the circuit board. Remove the control from the wall plate using a tool to spring the retainer at the bottom rear. Theįollowing solution corrected this problem.įirst, turn off the air conditioner switch. Had bent, and some of them were no longer making contact to create a goodĬircuit, resulting in difficulty in selecting the desired setting. After many years of use, the brass contact switches So, I decided to examine the switches and discovered that my While the price varied by source, the cost would come to more than $400 plus I was told that I would have to buy aįive-button control center, plus a new circuit board for each air conditioner. Lo and behold, I discovered that the four-button control had beenĭiscontinued several years ago. After it became progressively more difficult toĬhange the climate settings using the panel’s buttons, I decided to purchase a Duo-ThermĮquipped with a Duo-Therm Comfort Control Center that controls two roof airĬonditioners with heat strips. When a dip switch is turned on after the initial configuration, a system reset will need to be done before the Comfort Control Center will recognize the updated selection. FF should appear in LCD display until theģ. Simultaneously depress and hold the MODE and ZONE push-buttons while turning The dip switches in the electronic control kit, do a system reset.
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