START
Set the setpoint above the |
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| |
zone temperature. Verify | No | Is the power light on the |
| Are pump and/or burners | |
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| ||||
scheduling times and adjust | control panel lit? | Yes | turning on and off erratically? No | ||
| |||||
the correct setpoint (occupied |
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| |
or setback). Verify zone |
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| |
temperature sensor reading |
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| Yes | |
on the Board Status screen. |
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| |
Does the pump turn ON? |
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| Are shield wires from | |
Yes |
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| communication bus wiring and | |
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| VFD | |
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| correctly twisted and/or | |
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| grounded? | |
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| Yes | |
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| Contact your | |
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|
| ROBERTS GORDON® | |
|
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| Independent Distributor. | |
| No |
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| |
|
| No |
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| |
|
| Is the power light bulb |
| Replace 24 V power 1 A fuse | |
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| on relay board. See Section 8. | ||
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| burnt out? |
|
|
Is the pump light on the
controller lit?
No
Is the bulb for the pump light on the controller burnt out?
No
No
Yes
FIGURE 24: | SECTION 9: |
Troubleshooting Flow | TROUBLESHOOTING |
Chart |
|
Yes
Yes
Yes
No
Is the 24 Vac switch on the
relay board on?
Yes
Is the green power LED on No the control board lit?
| Yes |
|
No | Is the red “RUN” LED on | No |
the control board blinking? |
Yes
On the Manual Override
Yes screen (Alt+M), set the pump No status to "Auto".
Does the pump go on?
Yes
Is there 120 V at the relay
board power input terminals No L1 and L2?
No
Is there 24 Vac across the
24 V control board power Yes supply terminals on the
relay board?
Press the reset button on
the control board. Is the No red "RUN" light blinking.
Are current conditions being continually updated on the No
Board Status screen?
Check circuit breaker and controller power supply.
Is there 24 Vac at the 24 V | No |
control board power input? |
|
Yes
Contact your
ROBERTS GORDON®
Independent Distributor.
Verify communication wiring between PC and controller. Verify wiring between sensor No and controller. Verify shield
wires are twisted and/or grounded. Does the pump light on the controller turn on?
Yes
Rectify wiring between 24
V control board power supply and 24 V control board power input.
No
On the Manual Override screen (Alt+M), set the pump status to ON. Does the pump light on the controller come on?
Yes
Yes
SECTION 9: TROUBLESHOOTING
37
