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I have a concord it has 2 flashes saying the presure switch is closed how to open?

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Rap it with a screw driver handle, not too hard

Posted on Jan 19, 2009

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Computer board is flashing two red flashes. Code says that Pressure switch is open. What needs to be done now?


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Hi, the lights on my circiut board are flashing the one on the left is on all the time and the one to the right of it flashes two times and then waits and then flashes two times again


Error Codes
A green LED indicates system faults
Steady On: System OK
Steady OFF: Board control fault or no power applied
1 Flash: Ignition failure (control in one-hour lockout)
2 Flashes: Pressure switch fault, fails open (switch is
stuck open)
3 Flashes: Limit switch open (main or auxiliary)
4 Flashes: Pressure switch fault, fails closed (switch is
stuck closed)
A yellow LED indicates flame status
Steady on: Normal flame is sensed
Flashes: As flame weakens, frequency of LED flashes
increases

hope this is helpful.

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My 2 group astoria over steams from top of boiler.it warms up then in about half hr steam shoots out at the preasure valve doicky do i need a new one of those thanks greg


The pressure releive valve is pre-factory set to open if the pressure in boiler reach between 1.6 to 1.8 bars.
So either you have the presure switch (presostat) not working normal which supose to switch off the electrical element at 1.2 to 1.3 bars.
So look at the presure gauge at which presure the presure releive valve open and releive the steam out from boiler if it shown more than 1.5 bar the you need to check the presure switch since it does not switch off the heating element.
If the presure releive valve open below 1.5 bar then you need to replace the releive valve.
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Car starts and cuts out after 2 to 3 seconds. fuel


When the ignition switch is turned on the pcm turns on the fuel pump by energizing the fuel pump relay. The PCM keeps the fuel pump on as long as the engine is cranking over or running.It does this by recieving pulses from the ignition module. If there are no referance pulses the PCM will turn the fuel pump relay off in 2 seconds with the ingnition on.

Most models also include a secondary control path through the oil presure switch witch will turn the fuel pump on after it detects oil presure.cranking time will be longer if the fuel pump doesn't recieve current until oil presure switch contact is closed.

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Meaning of rudd furnace trouble codes


Error Codes
A green LED indicates system faults
Steady On: System OK
Steady OFF: Board control fault or no power applied
1 Flash: Ignition failure (control in one-hour lockout)
2 Flashes: Pressure switch fault, fails open (switch is
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3 Flashes: Limit switch open (main or auxiliary)
4 Flashes: Pressure switch fault, fails closed (switch is
stuck closed)
A yellow LED indicates flame status
Steady on: Normal flame is sensed
Flashes: As flame weakens, frequency of LED flashes
increases

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Bad control board?


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