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Components
Service manual
331
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
V (DC)
Detected pressure MPa
1.2
0.98
1.3
1.12
1.4
1.26
1.5
1.40
1.6
1.54
1.7
1.68
1.8
1.82
1.9
1.96
2.0
2.10
2.1
2.24
2.2
2.38
2.3
2.52
2.4
2.66
2.5
2.80
2.6
2.94
2.7
3.08
2.8
3.22
2.9
3.36
3.0
3.50
3.1
3.64
3.2
3.78
3.3
3.92
3.4
4.06
3.5
4.20
3.6
4.34
4
Measure the voltage on X32A: pins 1–3 (= refrigerant pressure sensor output
signal).
5
Check that the measured voltage is in line with the expected voltage through
the read refrigerant pressure.
INFORMATION
Connect the service monitoring tool to the unit or use field settings mode 1‑42 (see
455]) to monitor the high pressure.
If the measured output voltage value matches the voltage determined through the
measured pressure, but the pressure via the service monitoring tool is NOT correct,
replace the main PCB.
Summary of Contents for VRV IV+
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