Daikin VRV EMERION RXYQ-AATJA, Service Manual

Page: 314 / 429

Troubleshooting by Error Code SiUS342303E
307 Part 6 Service Diagnosis
3.38 Compressor Damage Alarm
Applicable
Models
All outdoor unit models
Error Code
E6
Method of Error
Detection
Determine the symptom to be error by detecting the revolutions of the compressor and pressure
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
Conditions When a state in which the actual current value of the compressor is abnormally high (by 130% or
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
Causes
 Defective compressor

Defective high pressure sensor
 Defective low pressure sensor
 Defective outdoor unit main PCB
 Defective inverter PCB
Troubleshooting
NO
YES
Are the
characteristics of
the high press u re
sensor normal?
( 1)
(1) Mo u nt a press u re ga u ge on the high and low press u re
ser v ice ports.
(2) Reset the power s u pply, and then restart the operation.
Replace the high press u re sensor
(S1NPH).
Caution
Be s u re to t u rn off the power switch b efore connecting or disconnecting
connectors, or parts may b e damaged.
NO
YES
Are the
characteristics of
the low press u re
sensor normal?
( 1)
Replace the low press u re sensor
(S1NPL).
Connect the ser v ice checker to compare the high
press u re and low press u re checked b y the ser v ice
checker and the act u al meas u red v al u es of the high and
low press u re sensors. ( 1)
Service Checker
A
CHECK 12
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