Daikin 10 - Page 98

●Troubleshooting
95
7
Troubleshooting
Troubleshooting
5
Troubleshooting
Diagnosis Countermeasures
1
Applicable Models
AKZ**A (All series)
2
Methods of Malfunction Detection
Detect with the pump motor
overcurrent relay (K1S).
3
Malfunction Decision Conditions
Class Conditions
50
When the pump motor
over current relay is
actuated.
4
Supposed Causes
1Defective oil piping by
customer
1Faulty oil pump (M1P)
1Incompatible viscosity of oil
used
1Faulty pump motor over
current relay (K1S)
1Faulty control board (A1P)
Control panel display
EH
Actuation of Pump Overcurrent Relay
Correct the power
supply voltage.
NO
Does
the power supply
voltage fall within the
range of rating
±10%?
YES
Change the oil to one
with viscosity of VG32 or
less.
NO
Connect to S182.
YES
NO
NO
Is there
conduction of
connector
S182?
YES
Replace the oil pump
(M1P).
(See page 127/142)
YES
Piping
pressure loss
on the main machine side
exceeds
0.5 MPa.
YES
The
viscosity of
oil used is in excess
of
VG32.
Improve the piping.
(Contact the customer.)
NO
Replace the over
current relay (K1S) or
harness.
YES
Is the
overcurrent relay
faulty or is the harness to
connector S182
derailed?
NO
Is connector S182
disconnected?
Connect the pump
power supply terminal
properly.
NO
YES
Pump
power supply
terminal is properly
connected to the
board.
Replace the control
board (A1P).
(See page 122/137)
00_PB00540A_M10.indb 95 2023/08/09 12:59:06