Safety Devices - Daikin VRV IV+ Service Manual

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6.6

Safety devices

Wiring Component
symbol
T1A Current sensor
S1PH, High pressure switch
S2PH
S1NPH High pressure sensor
S1NPL Low pressure sensor
M1C, M2C Compressor
JT16KBVDYR@S
M1C, M2C Compressor
JT16KBVDYR@S
M1C, M2C Compressor
JT1GUVDYR@BA
M1C, M2C Compressor
JT1GUVDYR@BA
R21T, Discharge pipe
R22T thermistor
R8T, R9T Compressor body
thermistor
R8T, R9T Compressor body
thermistor
R21T, Discharge pipe
R22T thermistor
R8T, R9T Compressor body
thermistor
A3P, A6P, Radiation fin
A4P, A7P temperature
Drop control is visible through service checker tool.
Retries are monitored by field setting Mode 1 (monitor mode):
1-23/24/25. See "6.9 Field settings" on
Forced stops will trigger error codes. Active errors are visible on the
outdoor unit 7-Segment LED Display, remote controller displays and
central controller devices. To consult the error history, see "To check
the error history" in "2 Troubleshooting" on
RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ Heat Pump
ESIE18-14 – 2019.07
Description Trigger
Earth leakage protection T1A > 75 mA (± 25%)
High pressure protection High pressure >4.0 MPa (+0.00, -0.15)
Reset: high pressure <3.0 MPa±0.15
High pressure protection High pressure >3.72 MPa
Retry 3 times in 40 minutes
High pressure >3.55 MPa in cooling mode
Reset: High pressure <3.04 MPa
High pressure >3.04 MPa in cooling mode
Reset: High pressure <2.89 MPa
High pressure >4.15 MPa (means high
pressure switch failed to open)
Low pressure protection Low pressure <0.07 MPa
Retry 3 times in 60 minutes
Low pressure <0.35 MPa in cooling mode
Reset: Low pressure >0.4 MPa
Low pressure <0.17 MPa in heating mode
Reset: Low pressure >0.23 MPa
Low pressure <0.07 MPa
th
4 retry in 60 minutes
Current protection Current >28 A
Current protection When current >28 A, three times in
60 minutes
Current protection When current >17 A
Current protection When current >17.6 A, three times in
60 minutes
Overheat protection Temperature >135˚C for 2 times within
100 minutes
Reset: Temperature <95˚C
Temperature >108˚C
Reset: Temperature <95˚C
Overheat protection Temperature >108˚C
Overheat protection Temperature >135˚C for 3 times within
100 minutes
Reset: Temperature <100˚C
Overheat protection Temperature >120˚C for 2 times within
10 minutes
Reset: Temperature <100˚C
Overheat protection Temperature >120˚C for 2 times within
10 minutes
Reset: Temperature <100˚C
Overheat protection Temperature >110˚C
Reset: Temperature <107˚C
Temperature >114˚C
page 188.
page 9.
6 Technical data
Error Action type
E2 Drop control
E3 Forced stop
E3 Drop control
Drop control
Drop control
JA Forced stop
E4 Drop control
Drop control
Drop control
E4 Forced stop
Drop control
L8 Forced stop
Drop control
L8 Forced stop
F3 Forced stop
Drop control
Drop control
F3 Forced stop
F3 Forced stop
F3 Forced stop
Drop control
L4 Forced stop
Service manual
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