Heater Motor.. Again !

[RS2junkie]

Hi,

Looking for a bit of advice on electrics

Had a new heater motor fitted but it stopped working again after a very short time. Took a look today and found the power and earth cables had been reversed at the connection to the motor ! (they are different sizes but its possible to switch them !!)

Could this cause damage or will the motor just run in reverse. I assume it would just run backwards, or not run at all ??? I checked the motor is still spinning by accessing the pollen filter, and its spinning freely... I changed the thermal fuse on the resistor pack as I know this is the usual culprit, but nothing ....

Any ideas on how to test what could be wrong ?

Thanks

[alexqts]

See this from SJM, it might help:

I might see if my wires are reversed also, blower motor is vibrating like crazy and almost no airflow...

http://www.sjmautotechnik.com/trouble_shooting/ac.html#blowchk

Just seen that you're in Guildford, i'm near Weybridge - come to think about it, sure i've seen you around

[LSG]

I guess you have changed the wires round to the unit. Maybe check if you have power on the live and the earth is an earth.