Heaters blowing cool air

Oct 20th, 2002, 19:48

The heaters in my car have started blowing cooler air irrespective of the temp setting on the dial. It is an ecc unit and happens when air con is on or off!!:o

Any pointers?

Oct 20th, 2002, 20:16

There are two sensors, on my 1995 T5 they are above each front passenger by the grab handles. They are small fans and blow air over the sensors to read the temperature. They may be faulty. On a more expensive note, it could be the ECC control unit. On my car it was the small sensors that were faulty. I also seem to recall the technician saying that low gas in the system can cause this also.

Bob Isaac
bob@volvoclub.org.uk

Chris_Rogers · Oct 20th, 2002, 21:01

Faults with the ECC will usually result in a fault code being logged, also the AC and recirc lights will flash for 20 secs when the ign. is switched on.
Does this happen? What Year is the car?

Oct 21st, 2002, 20:33

Thanks for the replies.
My car is a late 94 T5.
The ECC lights do flash occasionally and I think the reply from Bob about low gas in the system might be pertinant. I think I have a leak in the system as I had a re-gas this time last year and the air con has gradually lost effectiveness.
Interesting about the fans blowing over the sensors though.

Oct 20th, 2002, 19:48	#1
volvo850t5 Guest Location:	Heaters blowing cool air The heaters in my car have started blowing cooler air irrespective of the temp setting on the dial. It is an ecc unit and happens when air con is on or off!!:o Any pointers?

Oct 20th, 2002, 20:16	#2
WebAdmin Guest Location:	RE: Heaters blowing cool air There are two sensors, on my 1995 T5 they are above each front passenger by the grab handles. They are small fans and blow air over the sensors to read the temperature. They may be faulty. On a more expensive note, it could be the ECC control unit. On my car it was the small sensors that were faulty. I also seem to recall the technician saying that low gas in the system can cause this also. Bob Isaac bob@volvoclub.org.uk

Oct 20th, 2002, 21:01	#3
Chris_Rogers VOC Member Last Online: Apr 10th, 2017 16:55 Join Date: Jan 1970 Location: South Kent Coast	RE: Heaters blowing cool air Faults with the ECC will usually result in a fault code being logged, also the AC and recirc lights will flash for 20 secs when the ign. is switched on. Does this happen? What Year is the car?

Oct 21st, 2002, 20:33	#4
volvo850t5 Guest Location:	RE: Heaters blowing cool air Thanks for the replies. My car is a late 94 T5. The ECC lights do flash occasionally and I think the reply from Bob about low gas in the system might be pertinant. I think I have a leak in the system as I had a re-gas this time last year and the air con has gradually lost effectiveness. Interesting about the fans blowing over the sensors though.

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