The heater is not going on on auto i opened the unit yesterday and pushed the reset button. it started working again the igniter kicked on and it was blowing warm air again on auto but it stoped again this morning?
IF THIS IS AN OIL FIRED UNIT I WOULD CALL SOMEONE TO LOOK AT IT.THERE ARE NUMEROUS THINGS THAT COULD BE WRONG.IF THE UNIT STARTED BACK UP AGAIN AFTER PRESSING THE RESET BUTTON YOU COULD POSSIBLY BE LOSING IGNITION.THIS MEANS IF THATS THE PROBLEM YOU COULD BE SPRAYING FUEL OIL IN THE COMBUSTION CHAMBER.NEVER PRESS THE RESET BUTTON MORE THAN TWICE BECAUSE THE REPAIRMAN OR YOU COULD BE SERIOUSLY INJURED FROM AN EXPLOSION UPON RE-IGNITION.
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a 'roll-out' safety switch it a small button looking device with a smaller tab/button sticking out of it, near the gas injection manifold. has 2 wires attached. the reset button is generally between these wires. it's designed to shut the unit off, by breaking the power circuit, if flame ignition causes fire to back flash out of the fire box. Press the little button and try relighting. if the roll-out pops again, and there was no roll out of flame, you made need to replace it.
Go to the outside unit and open the door that covers the electrical connections. There will be a reset button on one of the temp switches that needs to be pushed. Now you have to see why it needs a reset.
cud hav computer or module issues--a readout scan shud b done-it shows voltages that a tech can decyfer------try using anothr key-chip cud b worn---------or disconnect batt a few --------or pull plug on computer and clean it-pins get dirty-----may reboot to normal--------go to a private shop for scan-not a dealer
To pull the codes:
1- Turn Ignition switch to OFF & Run/Stop switch is to Run.
2- Push odometer reset button in & hold.
3- Turn ignition switch to Ignition and release odometer reset button. Background lighting should illuminate, speedometer needle should sweep its full range and indicator lamps (battery, security, low fuel, check engine and cruise) should illuminate. The word "diag" should then appear.
4 - Push the odometer reset button once and you will see the selection menu "PSSPt" with the first P flashing.
5 - Each letter represents an area of the diagnostics module. The module that is flashing is the one you are going to check. To move from one letter (module) to the next, you push the odometer reset button one time. (from P to S to SP to t and back to P, etc.)
P = ECM/ICM (Electronic Control Module [EFI] / Ignition Control Module [Carbureted])
S = TSM/TSSM (Turn Signal/ Turn Signal Security Module)
SP = speedometer
T = tachometer
To get the DTC within an area of diagnostics, push and hold the odometer reset button in for 5 seconds and release. If there are any DTC's the code will be displayed or the word "none" will appear if there are no DTC's. Push the odometer reset button again to view additional codes if they exist.
1 - Record the codes.
2 - If DTC's are not to be cleared, Press and release the odometer reset button. Part number of module will be displayed.
NOTE: To determine if a code is current or historic, clear the displayed code by pushing in and holding the odometer reset button ( longer than 5 seconds) until 'clear' comes up. Release the odometer reset button. Turn OFF the ignition switch. Run your bike and shut it down then recheck the DTC's again by repeating steps 1 to 3 If the code is current it will reappear.
4 - Press and release the odometer reset button to continue to the next module.
5 - Turn Ignition switch to OFF.
On models not equipped with a tachometer "No Rsp" will appear when the tachometer identifier is selected.
"No Rsp" will also appear if the run/off switch is in the off position when doing this procedure.
Once you get the codes, repost what you have.
Example - U1301
The unit was probably running when the power went out causing the high temperature reset to kick out. this is a manual reset, so you need to find it and push the little red button in the center back in till it clicks. The heater will then work again.
Either wire harness problems or you got a so called lemon
One of the first books of Ralph Nader about auto industry.
Had a Hyundai like that 27 years ago. Until I took it totally apart and re-assembled it myself. 2 years ago bought a Piaggio 45 cc motorbike, same story. Took that apart one night and put it together as should be.
Update - we solved the same problem by resetting the Stat. Follow the instructions posted by kevinwhiteho, but we found that you had to push on the opposite side of the Stat with your finger whilst pushing the pin onto the trip mechanism.
Just a hunch as sometimes the micro will get scrambled so take off the battery as well as the battery or batterys for the date and time. and let the unit sit for 24 hours power back up as see if that cleared your error If not send away to get repaired.