Daikin GYEQ20AN, Руководство по обслуживанию

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SiAUY361411EA Flow Charts for Troubleshooting
Troubleshooting 156
29
Exhaust Temperature Sensor Disconnected
Error
code
J8
Description
of the failure
Sub-code 0: While the unit is running, the following conditions continue for 5 minutes: 1) The engine speed is
equal to or higher than 1400 min
-1
; 2) the engine load is equal to or higher than 0.3 MPa; 3) the
exhaust temperature is equal to or lower than 160°C.
Possible
causes
of the failure
Exhaust temperature sensor failure; harness failure; main circuit board failure; fuel gas type setting incorrect;
memory switches misconfigured
Flow chart
Is Exhaust Temperature
Sensor Operating Normally?
YES
NO Check Exhaust
Temperature Sensor.
Is Fuel Gas Type
Setting Correct?
YES
NO
Configure Main Circuit Board.
If Exhaust Temperature
Sensor Is Not Used, Is Memory
Switch 13-0 Setting Correct?
YES
NO
Configure Memory Switches.
025897-00E
Check whether sensor
connected properly to Main
Circuit Board's Harness.
30
Low-Side Pressure Sensor Disconnected/
Shorted
Error
code
J9
Description
of the failure
Sub-code 0: While the unit is running, the low-side pressure is reported as 5000 kPa (which means that the
low-side pressure sensor is shorted).
Sub-code 1: While the unit is running, the low-side pressure is reported as 5100 kPa (which means that the
low-side pressure sensor is disconnected).
Possible
causes
of the failure
Low-side pressure sensor failure; harness failure; main circuit board failure
Flow chart
NO
Check Low-Side
Pressure Sensor.
025898-00E
Is Low-Side Pressure Sensor
Operating Normally?
YES
Check whether sensor
connected properly to Main
Circuit Board's Harness.