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What would cause a central heat and air unit to not cool at all but switch to EM heat when turned to cool?
Wiki User
∙ 14y ago
thermostat is wired wrong or something damaged thermostat wires. check where they enter (outdoor) unit. may have abraded on metal edge.
Sounds like you have a cooling problem somewhere. The light for EM heat is also what we call a "you have a problem light". Does the outdoor unit run at all? Or does your emergency heat actually kick on, heat out of ducts?
yes the blower blowsheat out of ducts
Wiki User
∙ 14y ago
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Would a faulty dimmer combo switch cause the headlights to stay on without the vehicle running and the switch turned in the off position on a 1998 Olds Intrigue?
yes it will also cause them to blink off & on and
What would cause the power to the heater blower windows and windshield wipers on a 1998 Kia Sportage to work only when the switch is turned backwards a little bit?
First guess would be a bad ignition switch.
What would cause half of your electricity to go off in your home when you turned on a light switch and the fuse did not blow?
Not sure but just reset your breakers
What would cause the fuel pump on a 1994 Chevy 1500 pickup to continue running after the ignition switch is turned off?
failed relay
What would cause the headlights radio and dome lights to quit when headlights are turned on in a 1996 crown vic?
I would replace the headlight switch as Ford has had their share of these problems.
On a 1987 Chevy Celebrity if the ignition switch is bad would it drain the battery?
If the ignition switch is faulty it could leave an electrical component turned on and that could potentially cause a dead battery. That would not necessarily be the case and you might notice if the switch is supposed to be off but something still runs.
What would cause a fuse to blow when turning the light switch off if you have 3 switches hooked up in your bathroom and the power blows every time you turn the switch off but not while it is on?
Is it just one switch that causes it or do they all cause it? Sometimes a switch will cause a surge when turned off because electricity will arc inside the switch trying to continue powering the device. This can be seen if you unplug an appliance while its still on: you'll see an arc at the outlet. Loose wiring at the switch or anywhere on the circuit will cause this as well.
What would cause the dome light to stay on and not go off?
Often there is a switch on the dashboard, or an "on" function to an existing switch, such as a dimmer switch. It merely needs to be turned "off" and doors closed, to watch for light going out, notwithstanding any timer or short convenience period.
How do you know when a single pole switch is bad?
The first clue would be,having voltage at the terminal of the switch, when the switch is turned on,the circuit does not energize.
Where is the fuel pump shut-off switch at?
Most users of the fuel pump shut-off switch is near the starter button in a location where a thief would not find it. You can hear when the fuel pump switch is turned on and of course when turned off there would be no noise.
What would cause the interior gauge lights and informantion panel lights as well as the compass lights to go off when the headlights are turned on in a 97 Explorer?
First thing you want to check is the dimmer switch to see if it is turned all the way down.
What would cause the interior lights to stay on despite the door being closed the car door open and the keys removed on a Pontiac Grand Prix GT '97?
check your interer dimmer switch is it in the on position? dimmer switch is not turned on ... the lights stay on while the car is in use as well as when the car is turned off. they stay on exactally as long as the radio does if the car is turned off and you sit inside
