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Re: Turns itself on and off
The unit has a timer function and a Sleep timer function. Have you ensured both of these are not on?
If thy are off I would guess that either a button is bad and inducting a control signal to the controller or the controller itself is bad and just randomly is setting on and off times at random.
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A couple of things can cause what you described. The in-line gas ON/OFF valve may not be turned ON or is only partially open. The other is an obstructed (clogged) Direct Vent Termination on the outside of the house. Normally, the unit will try to restart itself an hour later, if ignition fails.
The above are the simple issues and resolutions. If the heater is 15 years old and it has been properly maintained and professionally serviced, at least annually, an aging ignitor would have been detected during annual servicing.
So, let's try to reset the electronics on the unit. To do this, turn the Master ON/OFF Switch to OFF and unplug the power cord from the outlet. Wait 15 - 30 minutes and plug the cord back in. Turn the Master ON/OFF Switch to ON. If the reset was successful, all the settings should have reverted back to the original factory settings and the heater should operate based on those settings. If it does, you can change them to what you desire.
If the above failed, you need to contact an authorized Rinnai dealer for a service call.
Hope this helped you troubleshoot and solve the problem.
Most BIOSes have a setting for what to do after a power failure--stay
off, turn on, resume last state. If the user is unplugging the unit
before a total legal and proper shutdown, then that might explain
why it turns on 'when plugged in'. Disconnecting before completely
shut down is detected by the BIOS as a power failure.
Also, killing power to a running system can cause file table corruption,
corrupt files, a destroyed operating system, even in rare cases a total
loss of everything on the disk.Although, If you mean the computer turns on by its self after it's been
turned off (so he unplugs it to keep it from powering on), then it
might be "auto awake" settings in the bios, I've seen some bios' have
"auto-power on" settings so that signals from network cards or
peripherals can power the computer up.
Also It turns out the CMOS battery went out and that probably reset the BIOS
so the computer itself was set to turn on by itself when it was plugged
in. With a new CMOS battery and a quick setting change the computer is
ready to go.
If you hold down the economy button and the up and down arrow buttons for 5 seconds the unit will start an error code display. Get a helper and yell out the numbers when they start blinking. Post the error codes and we can help you