J L Carr

Active Member

• Nov 20, 2016

• #1

Hi All. My RR had development a heater problem, it started yesterday morning on my way up to Birmingham. Drivers side is giving out heat but the passenger side is bolwing cold air and some times the frost symbol flashes on the heater control panel. So I took out the AC relays to see if that would stop this, but its still the same, the only thing I can come up with is 1 of the blend motors is stuck open and the air that's coming in is from the bonnet grill. I took out all the fuses to see if that would solve the problem and re-set thing's but no. So your help is needed.

 

wammers

No longer with us, RIP

Donater

• Nov 20, 2016

• #2

L/H blend motor failed . Snow flake will come up when O/T is 3 degrees C or less

 

Last edited: Nov 20, 2016

J L Carr

Active Member

• Nov 20, 2016

• #3

Thanks Wammers, how easy are they to change, can this be done by taking the glove box out, or is it a full centre console job.

 

wammers

No longer with us, RIP

Donater

• Nov 20, 2016

• #4

J L Carr said:

Thanks Wammers, how easy are they to change, can this be done by taking the glove box out, or is it a full centre console job.

Click to expand...

Sometimes they can be fixed by just cycling them. Depends what is wrong. Quite a task to completely change but you can get a new one and cut a splice the new one to the old cable. N/S one is a lot easier than the R/H one. See RAVE for instructions.

 

J L Carr

Active Member

• Nov 21, 2016

• #5

If it won't go back to normal by moving the controls, can the flap be closed manually till I get a new 1. After taking the blend motor off.

 

pwood999

Well-Known Member

Full Member

• Nov 21, 2016

• #6

J L Carr said:

If it won't go back to normal by moving the controls, can the flap be closed manually till I get a new 1. After taking the blend motor off.

Click to expand...

Yes . . . . after you remove the glovebox for access !!

As for the frost symbol, open the window to check if it's cold . . . .then close it again !!

 

J L Carr

Active Member

• Dec 17, 2016

• #7

Hi Guys. Got a replacement blend 5 wire motor the same as mine, but noticed what looks like a fiber optic wire as well or is this just a packing piece. If it is fiber optic how can you connect it ?, the hardest part about changing the motor is trying to get your hand behind the large duct as I cannot get this out of the way with out having to strip the whole dashboard out. Lol.

 

tarphenry

Well-Known Member

• Dec 17, 2016

• #8

its just packing,no fibre optics on the P38