If your hws runs on gas your other gas powered appliances can give you a clue as to whether gas is reaching your system.
Truma water heater not working on gas.
If they seem to be malfunctioning as well check the main regulator pressure.
I was having problems with my heater.
Check for gas or electrical supply issues.
Apparently the manufacturers know the problem and are endeavoring to fix it.
Truma corp 2800 harman dr elkhart in 46514 usa.
A heavier gauge metal is being tested as well as a better pressure reduction mechanism.
1 855 558 7862 fax.
No i don t fix caravan heaters but to help you here is how i fixed mine.
The problem is expansion when hot and contraction when cold of the water cylinder.
The burner switches off automatically when the faucet is closed to conserve lp gas.
If you are lacking heat by searching the web i found that there are several problems that seem to afflict these heaters 1 relays not working.
A comfortable water temperature at the faucet or shower is achieved by mixing with cold water.
The truma aquago basic does not have frost protection and should not be used or filled with water when there is a danger of freezing.