Heater Blowing Hot - MG-Rover.org Forums

Villager · 29-04-2008, 11:35

After replacing my heater unit, I now find that it only blows hot. After four months of no heat I'm not about to complain - it's been mostly top-down weather since then anyway. I happen to have a spare control unit handy - if I swap them over will this cure my problem?

I tried searching the forum for a solution, but you can't use common terms like 'always' or short words like 'hot', so that didn't get me very far.

Also, I get a substantial amount of heat coming through the foowell panels and the front console - this is normal, yes?

PERRY-MGTF · 29-04-2008, 11:43

Try this:

1. turn heater control to full cold
2. switch on the a/c
3. eave it until it gets cold air
4. switch off a/c
5. now you should have cold air through the vents.

Villager · 29-04-2008, 11:47

I don't have Air Con!

HarryB · 29-04-2008, 13:59

I do, though why is another question.

On the other hand, take of the panal in the drivers foot well and have some one turn the dials as you watch the control wires, mine weren't pulling right, I had no warm till the dial was half way unless I reved the engine, new wires and fixings on the axis points and all's well. could be yours arent pulling back to close the vents on return......

Villager · 29-04-2008, 14:41

Hmm if that's the case then it's likely down to my own shoddy workmanship when I put it back together. I shall investigate!

29-04-2008, 11:35	#1
Villager Registered User Join Date: Jan 2008 Location: Burnley Car: ZT 1.8T 187 bhp Posts: 1,486	Heater Blowing Hot After replacing my heater unit, I now find that it only blows hot. After four months of no heat I'm not about to complain - it's been mostly top-down weather since then anyway. I happen to have a spare control unit handy - if I swap them over will this cure my problem? I tried searching the forum for a solution, but you can't use common terms like 'always' or short words like 'hot', so that didn't get me very far. Also, I get a substantial amount of heat coming through the foowell panels and the front console - this is normal, yes?

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29-04-2008, 11:43	#2
PERRY-MGTF Registered User Join Date: Jan 2005 Location: Thessaloniki-Greece Car: MG TF Anniversary Edition #869 of 1600 Posts: 6,303	Try this: 1. turn heater control to full cold 2. switch on the a/c 3. eave it until it gets cold air 4. switch off a/c 5. now you should have cold air through the vents.

29-04-2008, 11:47	#3
Villager Registered User Join Date: Jan 2008 Location: Burnley Car: ZT 1.8T 187 bhp Posts: 1,486	I don't have Air Con!

29-04-2008, 13:59	#4
HarryB Supporter Join Date: Aug 2007 Location: Near Uppsala Car: MGF Posts: 3,968	I do, though why is another question. On the other hand, take of the panal in the drivers foot well and have some one turn the dials as you watch the control wires, mine weren't pulling right, I had no warm till the dial was half way unless I reved the engine, new wires and fixings on the axis points and all's well. could be yours arent pulling back to close the vents on return......

29-04-2008, 14:41	#5
Villager Registered User Join Date: Jan 2008 Location: Burnley Car: ZT 1.8T 187 bhp Posts: 1,486	Hmm if that's the case then it's likely down to my own shoddy workmanship when I put it back together. I shall investigate!

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