Question about Whirlwind FH-778 Air Conditioner
The back pressure on the suction side should be around 65-70 psi with R-22. Make sure the condenser coil is clean and that the condenser fan is working ok.
Also be sure the indoor filter is clean and that fan is running on high speed.
Posted on Jul 23, 2010
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Posted on Jan 02, 2017
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