Question about Heating & Cooling
The boiler turns on, and after a few min makes a noise as if its leaking air or something and then the flame switches off. It has been cleaned , pump changed and full flushing was done in last three days. It has a new CH flow valve as well. Thank you
Try cleaning the hole where the pressure sensor tube / rubber hose connects
Posted on Nov 30, 2014
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Posted on Jan 02, 2017
SOURCE: My oil boiler is a
The actual final solution was to replace the fuel valve/solenoid following which the boiler has run without failure.
The conclusion was that the fuel valve solenoid was ok when cold but when heated up had some sort of electrical breakdown in its coils, causing the fuel valve to fluctuate until the boiler locked out.
Posted on Oct 17, 2008
SOURCE: boiler making a loud hissing
sounds like a stuck expansion valve, the compressor makes pressure, but it can't be released to absorb heat from the desired environment. You could go to the manufacturer's website, request a detailed diagram of your system, find the expansion valve and order a new one. Can you put it in yourself and recharge the system? Probably not, call a repairman.
Posted on Nov 07, 2008
SOURCE: Amana Gas furnace, Air Command
Buy a new ignitor here; The Ignitor Store. Or talk an Amana dealer/Contractor to sell you one. They can range from 15 to 35 bucks! Depending on their mark-up. Give them your model number, and or ignitor part number. Their simple to change out, good luck, please contact if you have any questions.
Posted on Dec 02, 2008
Capacitor, dirty condencer coil causing the motor amps to run too high. But most likely worn bearing on blade side of motor causing it to pull to one side causing it to over heat and shut down. Sleve bearings should have no side play.
Posted on Jun 28, 2009
SOURCE: When firing the lochinvar knight
This kind of Manual High Limit issue can most likely be caused by two things :
1) If it's a Knight XL (399MBH and up), it's equiped with a manual high limit with is located in front of the boiler, behind the front panel just under the display bezzel. It has to be adjusted and reset (with the manual reset button on the control display).
2) If your unit is NOT equipped with that kind of Manuel High Limit, this message means that there was a low voltage wire that was shorted to the ground. Either the flow switch or the thermostat wire. The 24v fuse located on the main control board burned to protect the components. Lucky, Lochinvar provide replacements in the small plastic bag attached to the connection board.
Hope this help. Even if i'm late.
Posted on Nov 11, 2010
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