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22
RRDQ220V1
BEFORE REQUESTING REPAIR OR SERVICES
Symptom
Cause
Solution
The high
pressure switch
does not work.
① The high pressure switch is out of
order.
① Repair.
② Faston terminals are disconnected.
② Connect the faston terminals properly.
The high pressure
switch works even
at low pressure.
① The high pressure switch is out of
order.
① Repair.
The low pressure
switch does not
work.
① Auto/Manual Shut-off Mode Setting
sets at "Manual" side.
① Switch the shut-off mode setting to
"Auto Shut-off".
② The low pressure switch is out of
order.
② Repair.
The purity of
the recycled
refrigerants is not
good enough.
① Molecular Sieve is contaminated.
① Replace Molecular Sieve Replacement
Kit (AR338) referring to page 17 and
Filter (TF011).
② The O-ring in Dry Filter Housing is
damaged.
② Replace Molecular Sieve Replacement
Kit (AR338) referring to page 17.
Refrigerants leak
from the unit.
① The charging hose and the hose
gasket are not in good condition.
① Replace the charging hose and gasket.
② The lid of Dry Filter Housing is loose.
② Close the lid tight.
③ Filter and Sight Glass are loose.
③ Tighten Filter and Sight Glass.
④ The valve of Oil Discharge Port is
open.
④ Close the valve and put a cap on the
port.
BEFORE REQUESTING
REPAIR OR SERVICES