I suppose you are talking about gas water heater.

you can shut off the gas valve, remove the burner assembly, clean up water in the burner and pilot devices and put back. 

there is no sophiscated electronics.

所有跟帖： 

• 我也在寻思，这么热的天就开始用boiler 暖气啦？ -DD2020- ♀ (0 bytes) () 09/05/2021 postreply 08:45:14

• I managed to relit the hot water heater, and i wanted to try to -大北- ♂ (0 bytes) () 09/06/2021 postreply 13:52:45