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My controller ducted system isnt showing any thing on the

Customer Question
my controller for 9kw ducted...
my controller for 9kw ducted system isnt showing any thing on the display, there is 28v supply at the control unit
when it is unplugged and re plugged in , all characters on display are lit up for 1sec and then it turns off
any ideas?
Submitted: 1 year ago.Category: HVAC
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Answered in 2 days by:
1/19/2016
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 1 year ago
BillyHvac
BillyHvac, Journeyman HVAC Tech
Category: HVAC
Satisfied Customers: 22,756
Experience: Endorsed for unlimited heating, cooling, oil burners, boilers, refrigeration, hydronics
Verified

I am very sorry your question has not been picked up yet.

I just logged on and found you had not been assisted.

Please let me know if you still need help and I will do my best. Please do not "Rate" as we have not worked toward an answer yet.

If you would like to proceed let me know by replying.

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Customer reply replied 1 year ago
Can you please have a look aT this
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 1 year ago

does the thermostat also have a c terminal?

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HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 1 year ago

use meter on thermostat terminal R and C and tell me voltage

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Customer reply replied 1 year ago
28v
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 1 year ago

last test.

If you take the red wire from r in thermostat

and twist together with the white (W) terminal wire...does heat come on?

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BillyHvac
BillyHvac
BillyHvac, Journeyman HVAC Tech
Category: HVAC
Satisfied Customers: 22,756
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