Mitsubishi Heavy Industries FDCW100VNX, Technical Manual

Page: 108 / 173

Service
- -
Supply alarm
7KHIROORZLQJDODUPVVZLWFKRIIKHDWLQJFRROLQJ2QO\KRWZDWHUSURGXFWLRQLVSHUPLWWHG
10
11
30
36
Description Alarm text on the
display Alarm
no. May be due to
High VBF1
High VBF2
Sensor fault UG
Sensor fault VBF1
Too high temperature (>90°C) on flow line sensor,
system 2.
Too high temperature (>90°C) on flow line sensor,
system 1 (BT2).
Sensor fault, outdoor temperature (BT1).
Sensor fault, supply, system1 (BT2).
- Sensor does not work (see “Temperature sensor”
section)
Also see the troubleshooting guide on page 116.
- Sensor does not work (see “Temperature sensor”
section)
Also see the troubleshooting guide on page 114.
- Sensor does not work (see “Temperature sensor”
section)
Also see the troubleshooting guide on page 114.
- Open-circuit or short-circuit on sensor input
- Sensor does not work (see “Temperature sensor”
section)
Also see the troubleshooting guide on page 116.
- Open-circuit or short-circuit on sensor input
37 Sensor fault VBF2 Sensor fault, supply, system 2.
- Sensor does not work (see “Temperature sensor”
section)
Also see the troubleshooting guide on page 116.
- Open-circuit or short-circuit on sensor input
Alarm list