Check Points, Maintenance And Troubleshooting; Check List Before Starting Operation - LG THERMAV AHNW16606B0 Instruction Manual

Check Points, Maintenance and Troubleshooting

Before starting operation, pre-check points are described in this chapter. Some comments about mainte-
nance and how to do troubleshooting are presented.

Check List before Starting Operation

Turn off the power before changing wiring or handling product
No Category
1
Electricity
2
3
4
5
6
Water
7
8
9
Product Installation
10
11
Item
Field wiring
Earth wiring
Power supply
Terminal block wiring
Charged water pressure
Air purge
Shut-off valve
By-pass valve
Parts inspection
Refrigerant leakage
Drainage treatment
Check Points, Maintenance and Troubleshooting
Check Point
• All switches having contacts for different poles should be wired
tightly according to regional or national legislation.
• Only qualified person can proceed wiring.
• Wiring and local-supplied electric parts should be complied with Eu-
ropean and regional regulations.
• Wiring should be following the wiring diagram supplied with the
product.
• Earth should be connected. Do not earth to gas or city water pipe,
metallic section of a building, surge absorber, etc.
• Use dedicated power line.
• Connections on the terminal block (inside the control box of the in-
door unit) should be tightened.
• After water charging, the pressure gage (in front of the indoor unit)
should indicate 2.0~2.5 bar. Do not exceed 3.0 bar.
• During water charging, air should be taken out through the hole of
the air purge.
• If water does not splash out when the tip (at the top of the hole) is
pressed, then air purging is not completed yet. If well purged, the
water will splash out like fountain.
• Be careful when testing air purge. Splashed water may make your
dress wet.
• Two shut-off valves (located at the end of water inlet pipe and water
outlet pipe of the indoor unit) should be open.
• By-pass valve should be installed and adjusted to secure enough
water flow rate. If water flow rate is low, flow switch error can be oc-
curred.
• There should be no apparently damaged parts inside the indoor unit.
• Refrigerant leakage degrades the performance. If leakage found,
contact qualified LG air conditioning installation person.
• While cooling operation, condensed dew can drop down to the bot-
tom of the indoor unit. In this case, prepare drainage treatment (for
example, vessel to contain condensed dew) to avoid water drop.
Installation Manual 59