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Phil
Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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R.G. Blower fan on Carrier unit not working. First replaced

Customer Question

Hi R.G. Blower fan on Carrier unit not working. First replaced blower motor, then replaced control board. Still blower motor won't work. What does solid yellow status code light mean?
Submitted: 2 years ago.
Category: HVAC
Expert:  BillyHvac replied 2 years ago.
hello,
at the circuit board with power on and the door switch taped down...use a short wire shaped in a U and touch R and G at same time and hold...tell me if blower starts
Customer: replied 2 years ago.
hi billy. we tried it and the blower does not start
Expert:  BillyHvac replied 2 years ago.
thank you...
can you tell me what terminals the blower motor wires are on?
Customer: replied 2 years ago.
(Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Expert:  BillyHvac replied 2 years ago.
is this the variable speed motor with the module on rear of motor?
if so did yo replace this module with the motor?
Customer: replied 2 years ago.
yes, the module is HK44ER158 Motor Module 1/2 HP
Customer: replied 2 years ago.
yes we replaced the module
Expert:  BillyHvac replied 2 years ago.
Thank you. have by chance used a Carrier troubleshoot flow chart for this motor?
http://catalog.dcne.com/catalog/Data/00164.ECC/00117.PDF
Customer: replied 2 years ago.
We were trying to figure out what the blinking LED means. Right now, it's solid yellow, but i did notice after we tried to jump R to G earlier, that it started blinking...I'll try and determine what that code is
Expert:  BillyHvac replied 2 years ago.
did you get the link I sent?
Customer: replied 2 years ago.
Yes, we're going through the flowchart now. After we jumped R to G, we got code 41. We're following instructions on flowchart, it's asking us to check for 115VAC at PL14-5 and PL14-4, but the module only has PL13 and PL14
Expert:  BillyHvac replied 2 years ago.
you have 2 plugs....one set is 120v.
This is present all the time....the other plug...is 24v signals..that is what actually makes the motor run.
Customer: replied 2 years ago.
Oh, I see what they're asking. Yest we have 120VAC at PL14-4 and 5. We are checking for 24v signals now.
Expert:  BillyHvac replied 2 years ago.
not like the older motors huh?
Customer: replied 2 years ago.
Not getting 24v at PL3-1 and 7 (green and red). Not like older motors
Expert:  BillyHvac replied 2 years ago.
do you have 24v at thermostat terminals R and C?
Customer: replied 2 years ago.
yes we do
Expert:  BillyHvac replied 2 years ago.
have you ohmed the hrness out...the 24v harness
Customer: replied 2 years ago.
yes we did that too. Checked for continuity of both harnesses from board to module

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