Compressor Damage Alarm - Daikin VRV Aurora RXLQ-TATJU Series Service Manual

Troubleshooting by Error Code

3.38 Compressor Damage Alarm

Applicable
All outdoor unit models
Models
E6
Error Code
Method of Error
Determine the symptom to be error by detecting the revolutions of the compressor and pressure
Detection values detected by the high and low pressure sensors, and further making a comparison between a
theoretical current value of the compressor calculated from parameters detected and an actual
current value detected by the power transistor.
Error Decision
When a state in which the actual current value of the compressor is abnormally high (by 130% or
Conditions more) compared to the theoretical current value continues for a period of 30 minutes.
 In case of a system with multi outdoor units, the system will return an alarm if there is any
operational unit other than that applicable to E6 or determine to be error if not.
Supposed
 Defective compressor
Causes
 Defective high pressure sensor
 Defective low pressure sensor
 Defective outdoor unit main PCB
 Defective inverter PCB
Troubleshooting
291
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
(1) Mount a pressure gauge on the high and low pressure
service ports.
(2) Reset the power supply, and then restart the operation.
Are the
characteristics of
the high pressure
sensor normal?
( 1)
YES
Are the
characteristics of
the low pressure
sensor normal?
( 1)
YES
CHECK 12
Service Checker
Connect the service checker to compare the high
pressure and low pressure checked by the service
checker and the actual measured values of the high and
low pressure sensors. ( 1)
A
NO
NO
Go to the next page.
SiUS341802EC
Replace the high pressure sensor
(S1NPH).
Replace the low pressure sensor
(S1NPL).
Part 6 Service Diagnosis