Daikin UAL160A5 - Page 45

44
4
The LED indicator
of the unit displays
ER16 and the wired
controller displays 16
Compressor overload in #1
Over current in the compressor has
triggered the overload protector.
1. Check whether the electric
current parameter of the
overload protector is
congured correctly by
referring to the electric circuit.
2. Check whether the resistor of
the malfunctioned compressor
meets specication
requirements.
Fan overload in #1
Over current in the fan has triggered
the overload protector.
1. Check whether the electric
current parameter of the
overload protector is
congured correctly by
referring to the electric circuit.
2. Check whether the resistor of
the malfunctioned fan meets
specication requirements.
5
The LED indicator
of the unit displays
ER17 and the wired
controller displays 17
Compressor overload in #2
Over current in the compressor has
triggered the overload protector.
1. Check whether the electric
current parameter of the
overload protector is
congured correctly by
referring to the electric circuit.
2. Check whether the resistor of
the malfunctioned compressor
meets specication
requirements.
Fan overload in #2
Over current in the fan has triggered
the overload protector.
1. Check whether the electric
current parameter of the
overload protector is
congured correctly by
referring to the electric circuit.
2. Check whether the resistor of
the malfunctioned fan meets
specication requirements.
6
The LED indicator
of the unit displays
ER18 and the wired
controller displays 18
Pump overload
Over current in the pump has triggered
the overload protector.
1. Check whether the electric
current parameter of the
overload protector is
congured correctly for the
pump by referring to the
electric circuit.
2. Check whether the resistor
of the malfunctioned
pump meets specication
requirements.
7
The LED indicator
of the unit displays
ER19 and the wired
controller displays 19
Alarm from the differential water
pressure switch
The pump model is too small Replace the pump
The water lter is clogged up Clean the water lter
Air in the water system is not
completely discharged
Turn on the pump to further
discharge residual air
The differential water pressure switch
is clogged up
Repair or replace the differential
water pressure switch
The differential water pressure switch
has broken down
Replace the differential water
pressure switch
Pressure drop in the water system is
too sharp and unbalanced
Optimize the water system
Other parts in the water system are
clogged up
Check and repair