Check what are the cycle times in the system turn on.
Suction time for air ? At what speed?
Operation of Fuel pump - how many pumps?
Any smoke from exhaust? Smell off Diesel?
What happens during cool down period? Time?
I fired up the webasto for the first time on Sunday past and thought i was starting a smoke machine
Very scary - really
Reached for fire extinguisher
Then it went smoothly except connected water pump wrong way :bandit:
Change round this weekend for a toasty cabin, turbo heat in cabin at press of button