Original message
| moggy66
 |  "Trane blower motor cutting out"
, posted Tue 23 May 20:53:  
Hi
Working on a trane rooftop unit...the Blower motor keeps overheating and shutting down...cools down..kicks back in again any suggestions....... can't remember model # but was manufactured in Canada in 1994.... i have no manuals on it ,spoke to Trane awaiting one of there service tech to contact me...i have the right belt on it.. but there have been a few "service engineers" look at it but no seems to have sorted the problem out..........
who cares who wins
[this message was edited by moggy66 on Tue 23 May 21:02] |
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| moggy66
| "Re(1):Trane blower motor cutting out" , posted Tue 13 Jun 20:19
Thx to all.... found the problem....wrong motor and pully on the unit.......drawing 10a under load quick call to trane confirmed fault(thx guys) unit runnig great
who cares who wins
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| Dog Biscuit
| "Re(1):Trane blower motor cutting out" , posted Fri 9 Jun 00:36
In a general way some motors have a built-into-the-windings thermal overload device with auto-reset on the better motors.
Could that be true in your unit? Check amperage as mentioned;
Hi amps---hi heat on windings---thermal overload trips---cool
down---reset---start-up.
To err is human to repair divine
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| moggy66
| "Re(1):Trane blower motor cutting out" , posted Wed 24 May 08:56
Model # TCD090D30ABB
its a 230v3 ph
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| moggy66
| "Re(1):Trane blower motor cutting out" , posted Wed 24 May 06:01
i was leaning towards air flow problem as i have taken the motor out and ran it and it seems fine....but i can't seeany restriction in air flow....filters are clean...possible evap clogged maybe??????
who cares who wins
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| Xenos
| "Re(1):Trane blower motor cutting out" , posted Tue 23 May 21:04
Stupid question but is your ampprob in calibration? If the motor is running below RLA I can only think of air flow assuming the contacts are not pitted on the fan relay causing a voltage drop when they heat up.
P.S is this 575 or is it using a power transformer down to 460?
Xenos.
The best way to escape a problem is to solve it.
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