I would suggest having a professional adjust the settings to be sure that all the fuel is being combusted and also a carbon.
Cleaning rinnai gas heaters.
Having a portable gas room heater that is working to the proper manufacturers specifications is the best practice and there are a few things that can be done.
It is likely that the cleaning is not enough to solve the problem.
Wipe the exterior of the ventless gas heater with the cloth to remove dust and dirt.
If flame drops on stove this shows it is possibly a gas supply issue is there enough water flowing.
1 the first thing you will need to do is remove the front panel of the heater by removing the screws that hold it in place.
2 get a vacuum with a hose and preferably a brush on the end of the hose.
Turn off the power source for your tankless water heater.
This prevents cold water from flowing into the water heater and hot water from coming out during the cleaning process.
Check gas supply turn gas stove top on then turn hot water tap on.
If all the odourant is not burned there would be a kerosene type smell.
5 steps to cleaning your rinnai tankless water heater filter.
Close turn off the three water valves attached to your tankless water heater.
Gas heater rinnai convector 417 customer s operating information and installation instructions unflued room heater 17 pages gas heater rinnai compact 2 operation manual.
Try opening tap further or turn another tap on as well clean filter on hws and clean water restrictors in shower head and taps if water is isolated and safe to do so.
Shut off the main gas or turn off the circuit breaker for electrical devices.
Since natural gas doesn t have an odour there is an additive called mercaptan so that if there is a leak there will be a smell.