Why is nest fan always on?
Why is nest fan always on?
Forced-air systems run the fan whenever they’re heating or cooling. If not, your fan will only run automatically when your system is heating or cooling. If you have a system with a dedicated fan wire, you can manually turn on the fan with the app or your thermostat, or set a fan schedule.
Why does the fan shut off when I Turn Off the ignition?
Try pulling fuse #20 in the battery junction box. This is a 50 amp square fuse that will be hard to remove. If the blower then turns off the ignition switch needs to be replaced. when I went out and turned the fan control switch nothing came on. I turned the ignitionon and the fan on it came on. I turned off the ignition and everything shut off.
How do I Turn Off the blower when the car is off?
Pull ignition key, blower remains off for 2-3 seconds, then starts running at lowest speed. Press “rest” switch – button lights, fan runs at higher speed. Press “rest” switch again – fan stops, then starts again at a lower speed. Something higher up in the power chain is providing power when the ign. switch is off and the fan switch is off.
Is the blower fan running when the AC is off?
This is with the blower switch on the off position and heater/ac on off. I can use the blower motor switch and put it to low/med/high and everything works fine but again the blower motor is running on low speed as soon as I turn key to the on position.
When does the motor turn off with the ignition switch?
Now the blower switch never turns the motor off all the way, the motor is only off when the ignition is turned on if you turn the mode switch to off. This is positive ventilation to keep the cab pressurized. Does the motor turn off with the key? If it does it sounds like normal operation.
Why is the ignition switch on my blower not turning off?
This comes directly from the ignition switch on the green/yellow strip wire so it looks like the switch is failing to disconnect. Try pulling fuse #20 in the battery junction box. This is a 50 amp square fuse that will be hard to remove. If the blower then turns off the ignition switch needs to be replaced.
What happens to the fan motor when ignition is turned off?
The fan motor won’t shut off when ignition is turned off The fan motor won’t shut off when ignition is turned off – Answered by a verified Mercedes Mechanic We use cookies to give you the best possible experience on our website.
Why does my electric heater fan not shut off?
This comes directly from the ignition switch on the green/yellow strip wire so it looks like the switch is failing to disconnect. Try pulling fuse #20 in the battery junction box. This is a 50 amp square fuse that will be hard to remove.
How is the motor grounded in a blower?
The motor is grounded through the blower switch on the controls and the mode switch controls the relay that gives power to the motor so when you turn the mode to off the relay opens but the blower speed switch is shorted so the blower runs at all times.
