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Ignition problems My Boiler keeps firing up even when the water is not running and when the heating is on constant it seems to ignite far to freqently.

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Need to have it cleaned alsp maby fulty thimastat

Posted on Jan 20, 2009

  • Andrew Morrill Jan 20, 2009

    need to have it cleaned alsp maby fulty thimastat

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Boiler won't ignite for hot water unless heating is on.


If this is in a RV the propane monitoring valve may require more gas flow to turn on than the water heater requires. A central heating system requires substantial gas flow so when the monitoring valve opens to fire the central heating, there is enough gas flow to also fire the water heater.

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Boiler ries to fire on heating or hot water but then shuts down after 10 seconds to F1 with the flashing red light, any ideas. clearly same principle as any boiler but I'm looking for someone who has...


that would indicate that the boiler is not firing up
If oil fired, been there done that
it is out of oil
the oil filter is clogged
the nozzle could be clogged/burned
the igniter wires need adj/replacement

if gas fired - similar issues but no experience

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Boiler ignition failer


Try adjusting the gas to air mixture and flow rate. I don't work well in very cold weather, either. I think that's fairly typical. Even a diesel engine is difficult to start in cold cold weather. Perhaps heating the room where the boiler is would help or at lest insulate the room well. Including stopping any drafts that may be causing a windy condition in or around the combustion chamber.

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Hi, I've a fagor feb20e Eco plus combi boiler in


There is a flow sensor in the circuit and it is not sensing the lower flow from just the hot water. When you put it on heat though it does.

May 31, 2013 | Water Heaters

1 Answer

I have a halstead finest gold combi when I turn the boiler on the boiler goes into its ignition sequence when it comes to ignite the boiler fires but after the igniter stops the boiler cuts out completely...


Difficult to get too specific without knowing if you have gas or oil. Also, I am going under the assumption you mean the burner shuts down, not the whole heating system. That being said, all heating appliances have whats called a safety curcuit. Each control has the ability to shut down if certain critera are not met. There is a sensor that senses light down the blast tube. If no light is sensed in a predetermined time period, then the sensor cuts power to the burner. This stops delivery of fuel so if it does ignite you wont blow up.
(I suspect that the ignitor and burner shut down simultainously.)
It may be the sensor (cad cell eye) is doing its job, however why is the question. Could be a number of things including the fuel delivery, ignition, improper air adjustment, etc.
No qualified professional should diagnose a problem unless they are in front of the appliance. I recommend you find a licensed qualified heating techician. Hope this helps.

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1 Answer

Wickes 102 combi boiler constantly loosing water pressure


It sounds like your thermostat could be the problem. Have you noticed the boiler cutting off at all, or does it run continuously until it goes out on low water?

You stated, "when boiler is on", so I am wondering how you get the boiler on. If your boiler is controlled by a thermostat, you need to check it for a cold draft possibly from behind the thermostat in the wall where the wires come through. The thermostat should never be on an outside wall. The thermostat could be defective.

An aquastat can also control your boiler. If you have an aquastat, check the setting, typically 175 - 180 degrees. You should also have a "high limit" which should be set at 210 - 220. Some people run that high side limit higher; not a good idea - defeats the purpose. If the aquastat is set too high, the boiler will operate too hot and the problem you have will occur.

"pressure rises and pressure relief valve opens" This could mean that your pressure switch is prematurely venting. Check boiler temperature to see exactly at what temperature the T&P valve purges. If it blows off below the high side setting, either adjust or replace. The T&P valves are usually not adjustable. That blow off temperature is stamped on the head of the valve. So, if it discharges too soon, replace it.

Have you actually seen evidence thgat the T&P valve is opening? You may have a bad bladder in your expansion tank and your system may have air in it. Your boiler should have 12 psi when cold and 20 - 22 psi when operating. Check your boiler pressure guage.

"
this eventually drops below the minimum operating pressure" Technically, there is set point for a NO MINIMUM OPERATING PRESSURE. That is a function of the amount of water in the boiler. If the T&P is blowing off, it will vent water from the boiler and the boiler pressure will go down. There is a minimum operating TEMPERATURE.

Your boiler could be low on water. You will have to manually fill the boiler. Be careful of thermal shock to the boiler. Feel the piping, and fill only when the circulator is running. Make sure the water is not going directly into the boiler. The supply water should go into the circulating supply side which feeds the radiators, radiant floor, or base board circuits.

All this will adversely affect your hot water. The heat exchanger for the potable hot water may have scale build up in it. Using the hot water keeps the boiler running, and a scaled heat exchanger will give you cooler hot water and the boiler keeps running. If this is a problem, you will need to replace the heat exchanger. A better idea is to not use the boiler for your domestic hot water. Why run the boiler in the summer?

Feb 02, 2013 | Water Heaters

1 Answer

I have a HEAT MAKER MARK II Boiler and it wouldn't fire up , I replaced the HOT SURFACE IGNITER (I took the amp reading and i got 3.9 amps,wich is normal) and the boiler still wouldn't fire up i check...


Check the flow switch. Small black box lower left hand side as you face the from of the unit. Try to jump the connection and then see if it fires up. If it does, replace your flow switch. The flow switch prevent the boiler from firing because it is not sensing the water moving through the pipes. The boiler won't fire if water is not moving through it.

Craig @ Aggie Plumbing & Service

Dec 16, 2010 | White Rodgers Water Heaters

1 Answer

Gas boiler


hi sounds as though the system is sludged up & needs power flushing.the reason is that the water cannot circulate so over heats & pumps into the header tank.
expect to pay approx 350 400 pounds to have it properly cleansed, it will restore the system efficiency.
The other area worth considering is that it could be a faulty pump os that when th eboiler fires it cannot circulate so in turn expands & vents into the tank.

My advise is to arrange for a corgi engineer to sort it out for you.

Kindly

Richie

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