Aquacal GBB, Installation Manual

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OTA SYSTEM LOCKOUT
ISSUE
A malfunction has occurred that could allow the water temperature to surpass a safe level. An installed
"Over Temperature Alarm" kit has disabled the system.
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See " Over Temperature Alarm Kit " on page 69 for more information.
RESOLUTION
Call for service.
SMART COMM FAULT
ISSUE
Heat Pump is not receiving a signal from an external controller using a smart bus connection point.
RESOLUTION
1. Confirm a smart bus external controller is being used.
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If not, set external controller mode to "none" instead of "SMART".
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See " Configure for Smart Bus Controller " on page 24.
2. Confirm connection points from the external controller to the heat pump are correctly configured.
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See " Connecting Smart Bus Controllers " on page 23.
3. If using a smart bus external controller, confirm the controller is correctly set to send signals to the heat
pump. See manuals or guides provided with the external controller.
WATER TEMP SENSOR SHORT
or
WATER TEMP SENSOR OPEN
ISSUE
Shorted or open water sensor.
RESOLUTION
A qualified technician should replace the water sensor.
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