Finishing The Installation - LG MULTI V ARNH423K3A4 Installation Manual

Finishing the Installation

Use the checklists at the end of the installation manual to verify all tasks have been completed before calling for the Multi V Hydro Kit system
to be initiated. Place the System ID and Hydro Kit ID at the top of the page, sign, and date. Provide a copy to the company's project manager
or the Multi V System Startup Technician.
• After completing the final checks, reinstall all internal and external covers.
• Verify power is not connected to the unit. Power will be connected at startup.
• If any installation items are incomplete, note the items on the checklist and make sure the supervisor is aware.
• Check the installation area for tools and debris that may have been left behind.
• If all installation items are correctly completed, the Hydro Kit is ready for power-up and startup.
Water Pipe Operation Test
Before the Hydro Kit is put in use, test the water pipe operation. Before water pipe operation is tested, check:
• If water flow is appropriate.
• If the flow switch is operating properly.
• If the connection status is good.
• If the power wiring and communication cable are completely connected.
•
Never check the insulation resistance on the control board terminal. This will damage the control board.
Flow Switch Error Troubleshooting - CH14
If the water pipe is not operating correctly, check for flow switch issues:
• Check if operation of water pump is normal.
• Check for water pipe blockage.
Table 44: Hydro Kit Error Code CH14 Troubleshooting.
Error No.
14 Hydro Kit flow switch error. Flow switch failed to close.
1. Do not disconnect power even if CH14 error occurs. CH14 could be due to abnormal water pipe operation.
2. To troubleshoot CH14, remove any sludge, scale; and foreign particles like dust, sand, trash, rust that formed in the water piping and
on the strainer.
3. Clean the strainer completely.
4. After the water piping and the strainer are cleaned, remove CH14 by turning off the outdoor unit, and then the Hydro Kit. Disconnect
power to the Hydro Kit, connect power, and restart for normal operation.
FINISHING THE INSTALLATION
Description
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Check if water pipe operation is normal.
Check for blocks in the water pipe: Strainer could need cleaning, valve
is malfunctioning, locked, or operating in an unknown manner; air
could be present in water pipe; etc.
Check flow switch. Flow switch is malfunctioning, disconnected, etc.
Details
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