We came home to a very cold house so my husband changed the filters. When we woke up the house was colder than the night before. How do we get it working again? My husband couldn't find the restart button. Is there anything else we need to do?
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Sounds like fan & limit control
If temp on limit reaches max temp what happens gas valve deenergized,as MTR continues to run begins to lower temp. Thus reenergizing valve
Check filters,MTR speed for heating
You can get any error code that may be stored by pressing on the Economy button and the UP and Down arrows all at the same time and hold for 5 or 6 seconds. This may get you a start on what may be the problem. Post them when you get them. If you do not get any error codes, remove the right side panel closest to the wall and look for a small black rubber bulb. That is the thermostat for the unit. If you hold it with your fingers, it should show a higher temp. I am afraid that you are going to need a technician who is familiar with Rinnai heaters if you can't get it going.
Check the air filter and clean. If you can, raise the blower speed up to the next speed. Make sure all of the supply and return grills are open. Is the ductwork connected under the home and well insulated? Does the furnace ever stop or keep on running? If it does stop, you may have a bad thermostat.
You need to have your ducts balanced. It takes special equipment and expertise. They block some and open some ducts so the air flow is even throughout! You could just partially block or close the vents in the center and you might get more heat in the end of the runs. Also if the ducts are running in unconditioned air, like under the house or in the attic. You could be losing heat by not having insulation on the ducts. Try wrapping them. Hope that helps.
Denise, my heater not a coleman (a monitor heater (oil) kept turning off when the temp got really cold. I would advise you to ask if you can do this, I addded an additive to my drum outside which holds the fuel. Because the deisel thickens up when it gets cold, which makes the heater have a harder time distributing the fuel to the heater. So far the heater has not kicked off.
by restart button you mean reset i believe,its located on top of oil burner and says only push one time .if thats the button your pushing it is the reset button or retry for oil burner if you are pushing this there is a problem with burner
I never liked the user un-friendliness of the Chromatherm, I would suggest finding a thermostat that you can understand and operate. Yes the Chromatherm is a good one, but so damned hard to figure out. Stay away from thermostats that still use mercury. Good Luck!