Vauxhall Zafira which relays control rear window heater, cigareete lighter and car heater fan please, have checked fuses they seem to be fine, thanks in advance

There wouldn't be a relay for the ciggy lighter,
My frontera interior fan would only work with the engine running,
I would think the zafira would use the same principle.,I had one but didn't do much work to it.
Have you tried the ciggy power in the rear of the car?

Tbh I would think these faults you have are not related to the same fuse

Get back in touch and I'll try to help more

This happened to my frontera when the motor siezed up
Its a thermal fuse easy to get to and repair
http://www.rcmf.co.uk/4um/index.php?topic=90944.0

This is from the link above to make it easier

"I found the resistor, thanks to the Haynes manual I checked at the local library. No need to remove any blower motor, just remove the pollen filter and you can easily push it out from inside the air duct. Haynes describes the operation in 4 simple steps:
1. Remove glovebox
2. Remove lower trim panel and the air duct
3. Unclip the cover and remove the pollen filter
4. Push the resistor upwards disconnect the wires and 'voila'
"

It seems it's a common problem, usually associated with a clogged pollen filter in addition to the root cause (ie that it's a Vauxhall!). It also seems that often it's not the resistor pack itself that has failed, but the thermal fuze which "protects" it. This fuze can allegedly be replaced with a few minutes of soldering work, using a stock item from Maplin costing a squid or so: