- CableShort; 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:
- Sensor cable.
- Sensor thermistor cable (reading of 200 °C during one minute).
- Heater plate thermistor cable (reading of 200 °C during one minute).
Proceed as described for the Gas C.Open Alarm (see Section 8.1.7), but replace all
mentions of “-75 °C” with “200 °C”.
8.1.9 Gas Sens. Bad Alarm
• Alarm type: Due to system fault conditions.
• Non-abbreviated description: Replace sensor now.
• Alarm message on thePerception software: H2 Sensor Test Bad.
• Priority: Very high.
• Parameter(s) involved:
- SensRep Now; SysOK Relay;FaultTrig. submenu; see Section 3.2.3.
- No set point nor delay.
• Alarm cause(s): The sensor sensitivity has dropped significantly or the sensor
is not functioning.
Replace the sensor as soon as possible.
Note: The Hydran M2-X’s sensor is verified twice a month (the first and fifteenth
days of the month at midnight); the relevant parameters are recorded in the
Service history file. This test can also be performed manually using the Force
Sensor Test command (in the Service submenu), but no results are recorded. In
both cases, one of the following two messages is displayed if the test fails: Gas
Sens. Weak Alr or Gas Sens. Bad Alr.
8.1.10 S. Card Comm Err Alarm
• Alarm type: Due to system fault conditions.
• Non-abbreviated description: Communication error alarm.
• Alarm message on thePerception software: Sensor Comm. Failure.
• Priority: High.
8.1.11 S. Temp C. Open Alarm
• Alarm type: Due to system fault conditions.
• Non-abbreviated description: Low-Low sensor temperature.
• Alarm message on the Perception software: Sensor Temp Cable Open.
• Priority: High.
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