Sanyo 2-WAY ECO-i SPW-KR74GXH56A - Current Protection

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W-2WAY ECO-i SYSTEM
Control Functions
(1) Fan motor
(2) Inverter compressor
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.
(3) Constant-speed compressor
An alarm occurs when overcurrent or lock current is detected.
List of overcurrent and lock currents
List of Alarms
(4) CT circuit detection trouble
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.
Alarm Description
Compressor 1 (inverter
compressor)
H03 Occurs when an open CT circuit is detected in the inverter
compressor.
Compressor 2 (constant-
speed compressor)
H13 Occurs when a current value of 1.5 A or less is detected
when the constant-speed compressor is operating.
Compressor 3 (constant-
speed compressor)
H23 Occurs when a current value of 1.5 A or less is detected
when the constant-speed compressor is operating.
Compressor
No.
Compressor 2 Compressor 3
Detected
current
Overcurrent
Lock
current
Overcurrent
Alarm display H11 H12 H21 H22
Lock
current
Outdoor unit
type
Constant-speed
compressor
Overload
current [A]
Lock current
[A]
705 -
905 Compressor 2
1155 Compressor 2
Compressor 2
1305
Compressor 3
Compressor 2
1405
Compressor 3
--
11.6 13.7
12.1 14.3
11.6 13.7
11.6 13.7
12.1 14.3
12.1 14.3
Alarm Description
P16 Occurs during ordinary operation when overcurrent (27.0A) is detected.
P26 Occurs under the same conditions as P16 when the inverter compressor is operating
at or above 80 Hz.
P29
Occurs when missing phase or overcurrent (48 A) is detected at inverter compressor
start. (the alarm at frequencies below 25Hz)
H31 Occurs when HIC detects overcurrent (75A), or when an abnormal high temperature
(150 ℃) is reached.
Alarm Desc ripti on
P22 Occurs when the fanmotordetectsovercurrent, or when the motor is locked and
does not turn.
14. Current Protection
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