LG MULTI V WATER IV ARWV100DAL4 Installation Manual page 49

How to Cope with Abnormal Test Run
Item Phenomenon
When connecting the flow switch,
heat-sourced water doesn't flow
or the amount of its flow lacks due
CH24
to the checked error related to
heat-sourced water.
Whether
heat
water is
Heat water not supplied or flow
supplied
CH32
rate is insufficient
Heat water not supplied or flow
CH34
rate is insufficient(During Cool-
ing)
Daily check/management
1. Flow rate control
Check whether the strainer is clogged or whether the pipe is filled with air and then check the temperature and pressure
difference of the inlet and outlet pipe to check whether the flow rate is insufficient.
If the temperature and pressure difference is above the appropriate level, it means that the flow rate is reduced. In this
case, the operation must immediately be stopped and re-operated when the root cause is resolved. (*If air is trapped in
the pipe, the air must be purged. Air inside the water pipe interferes with the circulation of the heat water supply and can
cause insufficient flow rate or freezing.)
2. Brine density management
When using the brine (Anti-freeze) in the heat water supply, designated type and density must be used. Calcium chloride
brine can cause corrosion on the Shell & Coil heat exchanger and must not be used.
If the anti-freeze liquid is left as is, it absorbs the moisture from the air to cause a drop in the density, leading to freezing
of Shell & Coil heat exchanger. Therefore minimize the contact surface with the atmosphere and periodically measure
the density of the brine to supplement the brine as needed to maintain the density.
Cause
Check whether the heat source water supply pump is operating.
Check whether the heat source water supply pipe is clogged.
(Clean strainer, valve locked, valve issue, air trapped etc.)
Check whether the flow switch is normal condition.
(Flow switch problem, arbitrary control, disconnection etc.)
Check whether heat source water supply pump is operating.
Check whether the heat source water supply pipe is clogged.
(Clean strainer, valve locked, valve issue, air trapped etc.)
Check whether heat source water supply pump is operating.
Check whether the heat source water supply pipe is clogged.
(Clean strainer, valve locked, valve issue, air trapped etc.)
Test Run
Checkpoint and resolution
Installation Manual 49