• Alarm cause(s): Temperature of the base plate above the Alarm Hi-Hi SP
alarm set point.
8.1.7 Gas C.Open Alarm
• Alarm type: Due to system fault conditions.
• Non-abbreviated description: Cable open (not connected).
• Alarm message on the Perception software: H2 Sensor Test Cable Open.
• Priority: Very high (repair cable immediately).
• Parameter(s) involved:
- CableOpen; SysOK Relay;FaultTrig. submenu; see Section 3.2.3
- No set point nor delay
• Alarm cause(s): Faulty connection with one of the following cables:
- Hydran M2-X sensor cable.
- Sensor thermistor cable (reading of -75 °C during one minute).
- Heater plate thermistor cable (reading of -75 °C during one minute).
Proceed as follows:
1. Identify the cable that triggers the alarm.
• Verify if the SensorTemp value in the Temperature submenu displays -75 °C.
If so, the sensor thermistor cable (or a connector in the chain of connections)
is the one causing the alarm.
• Verify if the HeaterTemp value in the extended Temperature submenu
displays -75 °C. If so, the heater plate thermistor cable (or a connector in the
chain of connections) is the one causing the alarm.
• If the two above temperature readings are correct, execute the Force Sensor
Test command in the Service submenu. If the result is different than Good,
the sensor cable is probably the one causing the alarm.
2. Locate the corresponding cable and connectors in the Hydran M2-X (see Section
2.3).
3. Verify thoroughly the chain of connections for this cable, including the
connectors.
4. Once the problem is fixed, perform another sensor test to reset the Hydran M2-X
and cancel the alarm.
5. Wait at least two minutes. Verify the alarm has disappeared and, if applicable,
the corresponding temperature has returned to a normal value.
8.1.8 Gas C. Short Alarm
• Alarm type: Due to system fault conditions.
• Non-abbreviated description: Short-circuited cable.
• Alarm message on the Perception software: H2 Sensor Test Cable Short.
• Priority: Very high (repair cable immediately)
• Parameter(s) involved: