Question about Heating & Cooling
We just bought a house with a swamp cooler. Don't know about the make of the cooler, but has a MasterStat thermostat. It runs fine, however, if we have a power fail, when the power is restored, the swamp cooler starts up, even it had been off prior to the loss of power. The thermostat has automatic and manual settings, with a temperature dial. The on-off control is a push button toggle, not a 2 position switch. I can duplicate the problem by switching off the power to the house. I've tested it with the control in auto and manual, with the unit off. No matter what, it starts up when the power is restored. Do we need a new thermostat or is this some kind of electrical problem? Thanks.
Generally ther thermostat is the "brain" of the system, check the wiring diagram (if there is one) or the wiring and see if the on off swtch is inseries or parallell to the thermostat, (should usually be in series if it is I would say that the on off switch is the culprit. you cna verify with an ohmmeter to see if it is staying in the closed position.
Posted on Jul 19, 2009
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Posted on Jan 02, 2017
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