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BillyHvac, Journeyman HVAC Tech
Category: HVAC
Satisfied Customers: 22633
Experience:  Endorsed for unlimited heating, cooling, oil burners, boilers, refrigeration, hydronics
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I have an older model crane but it's like a new furnace and

Customer Question

I have an older model crane but it's like a new furnace and by the code it's saying pressure switch error model number is ***** 100a 948k3 it's a hundred thousand BTU.need to fix it
JA: How old is the appliance? Have you gotten error messages before?
Customer: Know
JA: Do you plan on doing the work yourself?
Customer: Yea
JA: Anything else we should know to help you best?
Customer: No that's about it I just had the gas turned on today so everything was good but the furnace is not doing anything
Submitted: 11 months ago.
Category: HVAC
Expert:  BillyHvac replied 11 months ago.


My name is ***** ***** I will do my best to assist you. I am looking over your question now and will respond shortly.

Expert:  BillyHvac replied 11 months ago.

When is the last time the furnace ran?

Customer: replied 11 months ago.
Just bought the house it probably hasn't been running in about four years
Customer: replied 11 months ago.
I'm not going to spend another $24 by that time it's 60 bucks I could have had a serviceman out tell me what's wrong with it just give me a couple things you look for what would send that error pressure switch
Expert:  BillyHvac replied 11 months ago.

The phone call is a computer generated offer.

I am not set up for phone contact.

Pressures switch -

blocked chimney or vent pipe

Tube to switch cracked or blocked

fitting on furnace that tube attaches to must be poked clear with paper clip sized wire.

Try those and get back to me as we continue until your good.

Customer: replied 11 months ago.
not that the computer board light goes solid color about a second blinks 6 times and starts blinking 3 times stops about a second blinks 3 times same over and over code chart says preasure switch error ...does not start up
Customer: replied 11 months ago.
the induced draft blower would come on still ...and then shut down if it were what you said wouldn't it.....
Expert:  BillyHvac replied 11 months ago.

is the inducer not running...check to see if stuck since it has been setting...

we need that motor to run