Emergency Operation - LG MULTI V HYDRO KIT ARNH963K2A4 Installation Manual

EMERGENCY OPERATION

Emergency Operation
Definition of Terms
• Fault: A problem that can stop system operation, but can be resumed temporarily under limited operation without a trained service techni-
cian's assistance.
• Error: A problem that can stop system operation, but can be resumed ONLY after a trained service technician troubleshoots and fixes the
error.
• Emergency Mode: Temporary heating operation when system is experiencing "Fault".
Faults
• The Hydro Kit could potentially operate continuously during the winter season.
• If there is a problem in the system that is not critical to heating mode operation, the system could temporarily operate in emergency mode if
the end user / building supervisor / etc. decides it is necessary.
Fault Level Classifications
Fault is classified in two levels according to the seriousness of the problem:
•
which is configured by DIP Switch No. 4 of the unit PCB.
•
When an Error Occurs
1. Unidentified Errors.
After an unidentified error occurs with the Hydro Kit, the system stops operation. Installer setting allows the system to activate On / Off
• Minor / Major Faults: Only heating is operable.
• Critical Faults: Complete stop.
• Troubleshooting Priority: Critical > Major > Minor.
2.
Depending on the status of the minor / major fault or error, an error code is generated.
• Minor Fault: Heating and cooling are operable.
• Major Fault: Only heating is operable.
• Critical Fault: Contact a trained service technician.
The system operates when the trained service technician clears the error.
Duplicate Minor / Major Faults and Option Errors
If an Option Error is occurring simultaneously with a Minor or Major Fault, the system gives the higher priority to the Minor or Major Fault and
operates as if such. Therefore, sometimes hot water heating cannot occur when the system is in emergency operation mode. If the water in
the tank is not warning up during emergency operation, check if the hot water tank sensor and related wiring are properly installed.
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Due to our policy of continuous product innovation, some specifications may change without notification.
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