Troubleshooting steps
Check system pressure verify switch operation check for leaks
HVAC Error Codes
PS – Pressure switch open
Pressure switch is open
Details
Pressure switch circuit is open indicating a pressure problem.
Error typealarm
MeaningPressure switch
Typical causesLow pressure high pressure switch fault
SolutionsCheck system pressure verify switch operation check for leaks
Severityhigh
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FAQ
Common questions
What pressure?
Check system pressure against specifications.
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