Xantia

[joelamarra]

can anyone tell me if there is a water contro valve on the heater. my heater emits only a small amount oh heat. no other water problems

[DickieG]

On Xantia's the heater doesn't have a valvem its an air blrnder system. The fault is probably due to either an blocked matrix, slipped adjustment cable, or if it has air conditioning, a problem with the air temp sensor behind the alarm LED.

 

If its the latter can you hear a small fan working behind the LED with the ignition on but no engine running?

 

Also have you tried moving the heat adjuster to full hot/cold? This will override the temp sensor to help establish the cause of the fault.