ac Evap Freeze

GTSRider · 09-17-2008, 02:56 PM

Hi All... have posted this before with no response.
My evap is freezing up, despite a proper charging.
Has anyone ever had this problem. I suspect the temp sensor swit

ch, but not
sure.
Thanks.
Pete

**Badger61** · 09-17-2008, 03:51 PM

Evaporator freezing is most likely caused by moisture in the refridgerant circuit, I would suggest a new receiver dryer and an hour of vacuuming the system before recharging, double check the quantity of refridgerant required and add 10ml of PAG oil.

GTSRider · 09-17-2008, 04:23 PM

Badger... thanks fro your reply.... you made good points.
One thing I forgot to mention, is that the compressor NEVER cycles off.
Pete

**Badger61** · 09-17-2008, 05:12 PM

What model and year do you have? They don't cycle on and off like the older systems.

GTSRider · 09-18-2008, 10:13 AM

It's a 1998 1.8ti Quattro

GTSRider · 09-18-2008, 11:12 AM

Hmmm.... so is it narrowed down to filter/dryer , and temp switch ?

**Badger61** · 09-18-2008, 02:57 PM

Start by replacing the dryer and give it a good vacuum.

GTSRider · 09-18-2008, 03:13 PM

Ok.... Thanks... will do.

09-17-2008, 02:56 PM	#1 (permalink)
GTSRider Newbie Join Date: Aug 2008 Posts: 13 Gallery: (0)	ac Evap Freeze Hi All... have posted this before with no response. My evap is freezing up, despite a proper charging. Has anyone ever had this problem. I suspect the temp sensor switch, but not sure. Thanks. Pete

09-17-2008, 03:51 PM	#2 (permalink)
Badger61 Super Moderator Join Date: May 2007 Location: Hertfordshire Posts: 377 Gallery: (0)	Evaporator freezing is most likely caused by moisture in the refridgerant circuit, I would suggest a new receiver dryer and an hour of vacuuming the system before recharging, double check the quantity of refridgerant required and add 10ml of PAG oil. __________________

09-17-2008, 05:12 PM	#4 (permalink)
Badger61 Super Moderator Join Date: May 2007 Location: Hertfordshire Posts: 377 Gallery: (0)	What model and year do you have? They don't cycle on and off like the older systems. __________________

09-18-2008, 10:13 AM	#5 (permalink)
GTSRider Newbie Join Date: Aug 2008 Posts: 13 Gallery: (0)	Evap Freeze It's a 1998 1.8ti Quattro

09-18-2008, 11:12 AM	#6 (permalink)
GTSRider Newbie Join Date: Aug 2008 Posts: 13 Gallery: (0)	Evap Freeze Hmmm.... so is it narrowed down to filter/dryer , and temp switch ?

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09-17-2008, 04:23 PM	#3 (permalink)
GTSRider Newbie Join Date: Aug 2008 Posts: 13 Gallery: (0)	Badger... thanks fro your reply.... you made good points. One thing I forgot to mention, is that the compressor NEVER cycles off. Pete

09-18-2008, 02:57 PM	#7 (permalink)
Badger61 Super Moderator Join Date: May 2007 Location: Hertfordshire Posts: 377 Gallery: (0)	Start by replacing the dryer and give it a good vacuum. __________________

09-18-2008, 03:13 PM	#8 (permalink)
GTSRider Newbie Join Date: Aug 2008 Posts: 13 Gallery: (0)	Evap Freeze Ok.... Thanks... will do.

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