Kaisai KMK-60RY1, Руководство по обслуживанию

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M thermal Split
70 202004
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4.13 H7 Troubleshooting
Digital display output 4.13.1
Description 4.13.2

Abnormal main circuit voltage.

Split stops running.

Error code is displayed on outdoor unit main PCB and user
interface.
Possible causes 4.13.3

Power supply voltage not within 90%~110% of rated voltage.

Outdoor unit main PCB is damaged.
Procedure 4.13.4
H7
Power supply voltage is not within
90%~110% of rated voltage
Yes
Provide normal power supply
No
Replace outdoor unit main PCB
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M thermal Split
202004 71
4.14 H8 Troubleshooting
Digital display output 4.14.1
Description 4.14.2

Pressure sensor error.

Split stops running.

Error code is displayed on outdoor unit main PCB and user
interface.
Possible causes 4.14.3

Pressure sensor not connected properly or has malfunctioned.

Outdoor unit main PCB is damaged.
Procedure 4.14.4
H8
No
High pressure sensor connection on
outdoor unit main PCB is loose
Yes
Ensure the sensor is connected properly
No
High pressure sensor has short-circuited
or failed
1
Yes
Replace the sensor
No
Replace outdoor unit main PCB
Notes:
1. Measure the resistance among the three terminals of the pressure sensor. If the resistance is of the order of mega Ohms or infinite, the pressure
sensor has failed. The pressure sensor connection are port CN4 on the KHA-06(08,10)RY1 outdoor unit refrigerant system main PCB (labeled 19 in Figure
4- 2.2 in Part4, 2.3 "Main PCB for Refrigerant System, Inverter Module"). port CN6 on the KHA-12(14,16)RY3 outdoor unit refrigerant system main PCB
(labeled 13 in Figure 4-2.4 in Part 4, 2. 3 "Main PCB for Refrigerant System, Inverter Module").
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