Trouble Shooting
If the following problems occur, please check as follows:
Problem
Solution
No operation of the
pump to generate
purified water
Check if the water supply pressure is high enough to work. The RO con-
troller box does not start the pump under low pressure.
Check if either high pressure switch or flush valve works.
Check if the fuse on transformer is burned; if so, then check if post in-line
carbon filter (T33) or PP cartridges is blocked, it may cause the pump to be
overloaded.
No operation at all
Check if power supply is normal.
Check if the water supply ball valve has been turned on (check if water
pressure is normal).
Check if the water storage tank is full of water.
No automatic opera-
tion
Check if there is any wrong operation.
Check if the high and low pressure valve is normal.
Pump head leakage
Check if post in-line carbon filter (T33) or PP cartridges are blocked, which
may cause the leaking. Sometimes the leakage may be caused by the in-
creased water pressure inside the pump head that cannot be released. If
so, replace all the carbon cartridges and send the pump for repair.
Either a weakened membrane or the blocked scale could cause the leak-
ing as well.
The water cannot flow out due to the blocked RO membrane, which is
caused by a blocked flow restrictor. This causes the pump head to be filled
with high pressure water that can cause a leak. Improve the relevant com-
ponents.
No water purifying
with pump normally
working
Maybe the RO membrane is blocked or the pump is out of pressure. If the
RO membrane is blocked, replace it. If the pump has no pressure, check if
it is due to either the pump having operated for too long or the filtering ma -
terials being blocked and the adequate maintenance not having been
done, which may cause the pump structure to weaken. Send in the pump
for repairing.
Lack of purified wa-
ter outlet with filled
tank
The cause may be a lack of air inside the tank. Please recharge the air
(7 psi) and check if tank has air leakage. If it does, please replace the tank.
If the post in-line carbon filter is blocked, replace the filter.
Continued dirt water
discharging with the
tap closed
Check if flush valve is operating normally; otherwise, replace it.
The input water valve was damaged.
No complete stop or
restart of RO sys-
tem with filled tank
High-pressure switch is out of work. Please repair or replace it.
Check if valve is releasing pressure and is not stuck. Please replace it.
Too little purified
water volume
Check if the filters are dirty or have served for too long. If the RO mem-
brane is dirty or has not regularly been flushed, replace it.
Check if the water is too cold.
Water supply pres-
sure quality beneath
that of the new sys-
tem
Please replace the pump.
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Item 50808 and others
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