York Diamond 90 furnace no heat

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Old 09-17-13, 06:46 PM
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York Diamond 90 furnace no heat

Hi, blower came on with thermostat set to off. Set thermostat to heat but got no heat. code 11 flashes says, disconnected jumper or improper ground. What do I do now? Real amatuer here.
 

Last edited by rwjwood; 09-17-13 at 06:47 PM. Reason: miss spelled word
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Old 09-17-13, 07:36 PM
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I don't know to what jumper it would be referring but you can check all of the ground wires, to verify connections are clean & tight.
 
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Old 09-18-13, 09:08 AM
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thanks

Thanks Grady, Mt brother in law is stopping by and he can fix anything
 
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