Flame detector's given up, mercury pressure developed from flame heating a small bulb and capillary pipe keeps gas flowing, they seem to fail over time. Not developing enough pressure and thus giving regulator a false flame out reading. dilonghi call them analysers. No fix - fir replacement prt
I'd be checking what the operating gas pressure is correct - when it's operating, not when it's stopped or off.
My suspicion is that the gas pressure is incorrect & the regulator needs adjusting, or that the gas bottle is simply too small for the heater & can't evaporate enough gas to keep it going.
You really need a gas expert to advise on site.
(Aussie gasfitter - too far to do house calls)
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Yes, clean the air filter if it's a foam , washable fliter. If it's not the washable kind , replace it. Also replace the gas filter if there's one on the engine. Buy a can or bottle of carburetor and fuel system cleaner and put it in the gas tank to clean the carburetor.
There is no pilot light on this model. An 11 error code tells us that there is no gas supply to the heater. Could be a bad gas valve, dirty igniter, gas got shut off somehow, dirty burner, etc... All you can do is make sure the filter is clean, a technician will need to open it up. Sorry.
CFH means "Call For Heat", and SPK is "Spark". It sounds like you are running out of gas.Propane tanks need to have 30% in the tank for a heater to run correctly,and after they are filled you must bleed the air out of the line.If you have Natural gas,the gas line may be too small to supply enough gas to keep it running. NOTE...gas pressure MUST be checked with the heater running.
Mysolution relates only if you are on LPG/bottleg gas. I have had many problems with the gas regultor actually on the initial supply line near the bottles sticking. Error code 11 is usually simply a gas supply issue and not a fault with the heater itself. Just rule out that before you start messing with the heater itself. Causes inside the heater would be either gas valve (unlikely) or PCB. Both are not normally intermittent. Try running something else on gas if you have anything and then turn on the heater.
Pool Heater Maintainance - Gas Pool Heater
Gas heaters are the most common type of pool heaters being used presently. The gas heaters work on natural gas or propane tanks. The gas heaters are favorite hide out of spiders and other insects. It is recommended to regularly clean the spider webs and the debris off the heater. For it can clog off the burner openings. You can clean them manually or with the help of a vacuum cleaner as well.
The most important thing about maintaining the gas pool heaters is to check the gas supply regularly. Check out the pipes to detect any leakages. You can easily detect the leakages using a soap solution. Prepare a liquid dish soap and warm water in the spray bottle. Now spray the solution on the pipe joints. If you find any bubbles emerging from the surface, you immediately need to repair the pipes. Never use the heater until the pipes are replaced or repaired by a qualified plumber.
Pool Heater Maintainance - Electrical Pool Heater
Electrical pool heaters are also getting popular these days. The heaters produce the heat with the help of heating elements. The element can get coated with certain minerals present in the atmosphere. This hampers the heating process. You can easily take it out and clean with a wire brush. Some elements get damaged beyond repair. You have to replace the element. Take along the old element with you while looking around for a new one in the market.
It is absolutely vital to change the element otherwise it can send some current in the swimming pool. First of all, turn off the power supply to the heater to avoid any injuries. Open up the drain pipe and take out water from it. Fix the new element and test the heater by filling water in your swimming pool so that the heater can work to its full efficiency.