Lp5 System Lockout; Multi-Unit Comm Fault; Ota System Lockout; Smart Comm Fault - Aquacal TropiCal T035 Operation Manual

LP5 SYSTEM LOCKOUT

ISSUE
The heat pump has locked due to five low-pressure faults during one call for heating or cooling.
RESOLUTION
1. Deactivate then reactivate power to the heat pump to clear error.
2. Troubleshoot the low-pressure issue causing the error.
See "LOW PRESSURE FAULT" on the previous page.
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MULTI-UNIT COMM FAULT

ISSUE
Slaved heat pump is not receiving a signal from the master heat pump.
RESOLUTION
1. Confirm the master heat pump is operating correctly. If, for example, no power is supplied to the master
heat pump, an error will appear on the slaved heat pumps.

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.
See "Over Temperature Alarm Kit" on page 53 for more information.
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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.
If unsure, contact installer of heat pump for more information. The heat pump may need to be
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reconfigured to set external controller to "none".
2. 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.

VARIABLE DRIVE FAULT

ISSUE
A problem was detected in the variable speed compressor.
RESOLUTION
Deactivate heat pump at power disconnect. Wait for two minutes for the capacitors to discharge.
Then reactivate heat pump's power at disconnect. If error reoccurs, call for service.
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