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I have a trane voyager roof top unit. the furnace locks out…

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hi i have a trane...
hi i have a trane voyager roof top unit. the furnace locks out after 10 minutes trying to see what an cause this i get two flashing light error which means external lock out. there is a new glow plug in the unit.
Submitted: 8 months ago.Category: HVAC
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Answered in 3 minutes by:
11/9/2017
HVAC Technician: airheatman, HVAC Technician replied 8 months ago
airheatman
airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 9,175
Experience: Furnace, A/C and heat pump specialist.
Verified

Usually the issue with these units is a limit is opening or a pressure switch is opening.What is model on unit?

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Customer reply replied 8 months ago
ych150d3hobbi found two limits on it one under the ignition glow plug and one by the blower fan by passed both its still locking out
Customer reply replied 8 months ago
as i said before it is flashing twice which is the lock out code
HVAC Technician: airheatman, HVAC Technician replied 8 months ago

To reset the system at the unit, cycle the unit power by turning the disconnect switch “Off” and then “On”.

See if it gives a different code before locking out

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Customer reply replied 8 months ago
it does not give me code i stood there the whole time what it does is that the inducer fan shuts off the board tries to reignite a few times but it wont since the fan is not working after the board locks the fan starts again.
HVAC Technician: airheatman, HVAC Technician replied 8 months ago

Inducer has to stay running so pressure switch will close and stay closed.Are we losing power to the inducer?

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