Low side low, high side normal on dual evap system

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lbarowski
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Low side low, high side normal on dual evap system

Post by lbarowski »

2011 Town & Country with dual evaporators. At 90F, high side gradually climbs to 270 psi, low side is about 6 psi. Seems like that would indicate a stuck expansion valve, but there are two expansion valves. Both front and rear AC blow warm (no apparent cooling at all). What happens with a clogged expansion valve on a dual evap system? Not this I would guess. What could this be? Not sure if this happened suddenly or gradually as AC was not used for several months.
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bohica2xo
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Re: Low side low, high side normal on dual evap system

Post by bohica2xo »

Sounds like it is very low on charge.

Recover it & weigh the charge. If it had more than 755 charge, pull the receiver dryer & check for a failed dessicant bag.
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