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kittenrice t1_ja8ki9d wrote

The manual for this control can be found here.

Page 49 says: All lights flashing - Pilot not established after 4 attempts.

So, either the pilot is not lighting, or it's not being sensed properly. My money is on a dirty flame sensor.

Either call someone to do it for you,

or

Turn off the gas and power to the unit. Figure out what you need to undo to get the burner tube that has the pilot assembly attached to it out. Undo that stuff. Clean the sensor (see page 32). Put it back together and test.

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[deleted] OP t1_ja8wmkn wrote

[deleted]

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kittenrice t1_ja8z88k wrote

NGL, I'm not familiar with that control. This is a best guess situation. The lights are erratic, which makes me lean toward a faulty control...

However, there's no harm in cleaning the pilot and sensor and it's much, much cheaper than replacing the control, ($220+) so it's worth trying that first.

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iseverynametaken12 t1_jack3jc wrote

That's a gv90 series boiler there is no pilot it's direct ignition hsi

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kittenrice t1_jacvj4b wrote

Not exactly. You're right, it doesn't have a standing pilot. You're also wrong, it doesn't have an HSI. What it does have is an on-demand spark ignition pilot (see page 32).

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