'98 V70R air con pipes frozen

jimka · Jan 16th, 2017, 19:16

Evening all,

Had my air con looked at, had a new drier fitted as old one was a rusted mess and garage vacuumed the system twice to ensure no water etc. Refilled with gas.

Compressor fired into life and the vents begun to produce ice cold air, but within 30mins the heater fan struggled to push air to the vents even though I could hear the motor flat out. The compressor cycles as expected (presuming not too fast 1 min a cycle I think without going out and timing)

Looking under the bonnet the air con pipes were covered in thick ice. I'm guessing the evaporator is freezing preventing air flow.

If you turn off air con for 30mins, it clears and the fans working again.

What do I need? I've researched and think potentially a new orifice tube (1998 v70R doesn't have a evap temp sensor) but what else? I really don't want a new evaporator as its a dash out job!

Thoughts?....

Jan 16th, 2017, 19:16	#1
jimka Volvo Obsessed Last Online: Apr 22nd, 2024 09:35 Join Date: Aug 2006 Location: Southampton	'98 V70R air con pipes frozen Evening all, Had my air con looked at, had a new drier fitted as old one was a rusted mess and garage vacuumed the system twice to ensure no water etc. Refilled with gas. Compressor fired into life and the vents begun to produce ice cold air, but within 30mins the heater fan struggled to push air to the vents even though I could hear the motor flat out. The compressor cycles as expected (presuming not too fast 1 min a cycle I think without going out and timing) Looking under the bonnet the air con pipes were covered in thick ice. I'm guessing the evaporator is freezing preventing air flow. If you turn off air con for 30mins, it clears and the fans working again. What do I need? I've researched and think potentially a new orifice tube (1998 v70R doesn't have a evap temp sensor) but what else? I really don't want a new evaporator as its a dash out job! Thoughts?....

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