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Ask Zev Simfukwe Your Own Question
Zev Simfukwe
Zev Simfukwe, HVAC Technician (NATE)
Category: HVAC
Satisfied Customers: 23
Experience:  11 years exp., NATE certified: heat pumps, gas and oil furnaces, A/C, Universal CFC, R410A certified
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My Tempstar furnace smart valve is flashing a code (8 flashes)

Customer Question

My Tempstar furnace smart valve is flashing a code (8 flashes) that tells me that my high pressure switch is stuck closed. is there a way to bypass this switch until morning so i can get parts?? or is there something else i should do??
Submitted: 6 years ago.
Category: HVAC
Expert:  Zev Simfukwe replied 6 years ago.
Are there two pressure switches or just one with four wires or two tubes connected to it?
Customer: replied 6 years ago.

there is only one hi pressure switch that i see on the drawing

TEMPSTAR

the mod# XXXXX

Expert:  Zev Simfukwe replied 6 years ago.
How many wires or tubes go to the pressure switch?
Customer: replied 6 years ago.
THERE APPEARS TO BE ONLY TWO WIRES GOING TO SWITCH, I DO NOT SEE ANY TUBES OTHER THAN MAIN GAS LINE COMING IN AND 1 TUBE THAT FEEDS THE BURNER. THIS SWITCH LOOKS LIKE IT IS ON THIS SMART VALVE
Expert:  Zev Simfukwe replied 6 years ago.

Disconnect the tube that goes to the pressure switch. Put your mouth on the tube and suck on it. Do you hear the switch click open and closed?

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