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1
Occurs when an open CT circuit is detected in the inverter
compressor.
96
Occurs during ordinary operation when overcurrent (27 A) is detected.
(1) Fan motor
(2) Inverter compressor
(4) CT circuit detection trouble
List of Alarms
(3) Constant-speed compressor
List of overcurrent and lock currents
An alarm occurs when overcurrent or lock current is detected.
The inverter current includes a primary current and secondary current. The alarm judgment utilizes both cur-
rents. Generally, the secondary current is larger that the primary current.
Alarm Description
P22 Occurs when the fan motor detects over current, or when the motor is locked and
does not turn.
Alarm Description
P16
P26
P29
H31
Occurs under the same conditions as P16 when the inverter compressor is operating
at or above 80 Hz.
Occurs when missing phase or overcurrent (48 A) is detected at inverter compressor
start. (the alarm at frequencies below 25 Hz)
Occurs when HIC detects overcurrent (75 A), or when an abnormal high temperature
(302°F) is reached.
Compressor 2
23.1
27.3
Outdoor unit
type
Constant-speed
compressor
Overload
current [A]
Lock current
[A]
Compressor
No.
Compressor 2
Detected
current
Alarm display
Overcurrent
Lock
current
H11 H12
Compressor 1 (inverter
compressor)
Compressor 2 (constant-
speed compressor)
Alarm
H03
H13
Description
Occurs when a current value of 1.5 A or less is detected
when the constant-speed compressor is operating.
If the inverter compressor operating frequency is low, the current value is also low. Therefore this alarm is
detected only when the compressor is stopped.
The operating current of the constant-speed compressors is always higher than 1.5 A. Therefore, this alarm
occurs as the result of an open circuit or failure.
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14. Current Protection
W-2WAY ECO-i SYSTEM
Control Functions