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Unit doesn't have pressure switch but the fault code is two…

Customer Question
Unit doesn't have pressure...

Unit doesn't have pressure switch but the fault code is two blinks on the ignition control

Contractor's Assistant: Did you double-check the thermostat? And what about the unit's filters?

Put a new state and filters are good and induced motor is not coming on either

Contractor's Assistant: Do you plan on doing the work yourself?

Yes

Contractor's Assistant: Anything else we should know to help you best?

I've replaced the ignition board, rollout switch and high limit switch and transformer

Submitted: 6 months ago.Category: HVAC
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Answered in 3 minutes by:
12/27/2017
HVAC Technician: Rick, HVAC Supervisor replied 6 months ago
Rick
Rick, HVAC Supervisor
Category: HVAC
Satisfied Customers: 24,393
Experience: 40+ yrs. experience as a licensed oil & gas technician.
Verified

Welcome to Just Answer, my name is ***** ***** I will do my best to help you with your issue. First I’ll need some more info so I have a more complete picture of your situation.

What's the brand & model number of your unit?

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Customer reply replied 6 months ago
Nordyne MMHA-056AAHR-02
Customer reply replied 6 months ago
I've put a new stat, ignition control, rollout and high limit switches, transformer for blower relay section
HVAC Technician: Rick, HVAC Supervisor replied 6 months ago

Ok, you may not have a pressure switch but you do have a centrifigal switch in the combustion motor that must prove it's turning. Generally the switch is integral to the motor so you'd have to replace the motor.

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