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sounds like you have an air lock in your water works that's not letting the water flow from the engine through the heater matrix. check system for leaks top up and blead as required. if you have no visable leaks get the system pressure tested, could be something more serious developing.

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Q: When turning on heat to defrost window - cool air comes out - why?
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Related questions

How do you keep your cool?

By turning on the air conditioning. Or opening a window. Or parking in the shade.


How do you keep your car cool?

By turning on the air conditioning. Or opening a window. Or parking in the shade.


How can you defrost cool quickly?

burn in 1000000000000000 digreese c lol #;d


How do you defrost your 1.5kg chicken?

Leave it wrapped and defrost in the refrigerator. Or, put it, unwrapped, in a pot large enoughto hold it. Put the pan with the chicken in it, into the sink. Fill with cool water and run cool water over it until thawed. Cook immediately after thawing is complete.


How heat pump used to heat the building?

Imagine a window AC unit installed backwards, rejecting heat indoors while air conditioning the world, this is a heat pumps heat mode. As the unit is air conditioning in the cool outdoors eventually the outdoor coil will ice up requiring a defrost cycle, defrost is the AC mode except the outdoor fans off to assist with the defrosting. A defrost cycle is time and temperature initiated, time or temperature terminated.


Why wasn't the window cool?

Because it didnt have shades


How can window condensation be reduced?

Try opening the window to let some cool air through. This should help.


Why does a fan keep you cool on a hot day?

the air is cooled when a fan is turning the cold air keeps u cool


How do you cool down a hot bedroom?

Open the window. Or get out of it cuz its on fire


Can install window air conditioner in different direction because I have side by side sliding windows?

If you are referring to turning it on it's side, then no. The condensate that occurs typically collects in a pan that helps cool the internal working of many modern ac units.


What are some cool words?

Snarkygadzookbonkdefenestrate (to throw out of a window)pulchritudinous (beautiful)inconspicuous


Why is no cool air coming from ac window unit?

Have you checked it's switched on?