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Forum: S-Series Tech 04-16-2015, 04:56 PM
Replies: 12
Views: 2,205
Posted By trainer
Re: sc heater blower only one speed

Advice appreciated,HVAc blower relay coil was intact (pins 85/86), however the contacts that switch power to blower when high speed is selected were burned when I pried open the case.Replacement...
Forum: S-Series Tech 04-13-2015, 08:49 PM
Replies: 12
Views: 2,205
Posted By trainer
Re: sc heater blower only one speed

I see theres a hvac blower relay in my 95 sc2IP junction box and think it may control power to blower motor only when highest speed is selected unlike diagram in post 4 that shows no relay in this...
Forum: S-Series Tech 04-13-2015, 08:11 PM
Replies: 12
Views: 2,205
Posted By trainer
Re: sc heater blower only one speed

Thanks for above info.I note the diagram in post4 shows direct line from blower speed switch high position to the blower motor and does not show a hvac relay controlling power to blower at high...
Forum: S-Series Tech 04-13-2015, 12:49 PM
Replies: 12
Views: 2,205
Posted By trainer
Re: sc heater blower only one speed

actually I was wrong ,only blower speed that's out is highest,lower ones ok, I switched relay under hood and no better.Des this mean switch is bad ib high position or is there some other relay...
Forum: S-Series Tech 04-12-2015, 10:32 PM
Replies: 12
Views: 2,205
Posted By trainer
sc heater blower only one speed

Have 95 SC2 today heater blower stopped working EXCEPT on third speed.Highest speed is out as are lowest 2.I thought highest speed bypasses the heater resistors so is this problem a bad switch?if...
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