12.1.17 Replace Sensnow; 12.1.18 Replace Senssoon - GE Hydran 201 i Instruction Manual

Chapter 12 • Troubleshooting
• Parameter(s) involved:
– HourTrend LL; SysOK Relay;FaultTrig. submenu; Section 4.5.7 on page 4-23
– HourTrAlr LL (alarm set point); Gas;HourlyTrend submenu; Section 4.5.2.2 on
page 4-16
– HourTrAlr Delay; Gas;HourlyTrend submenu; Section 4.5.2.2 on page 4-16
• Alarm cause(s): Hourly trend below the HourTrAlr LL alarm set point. Probably
indicates a gas level reading problem.
Perform step 1 in Section 12.1.15 on page 12-9, and then steps 2 to 5 in Section 12.1.7 on
page 12-5.

12.1.17 Replace SensNOW

• Alarm type: Fail alarm
• Non-abbreviated description: Replace Hydran 201 sensor immediately
• Priority: Very high
• Parameter(s) involved:
– SensRep Now; SysOK Relay;FaultTrig. submenu; Section 4.5.7 on page 4-23
– No set point nor delay
• Alarm cause(s): The sensor sensitivity has dropped significantly or the sensor is not
functioning.
Replace sensor as soon as possible.
Note: The Hydran 201Ti's H201 sensor is verified twice a month (the first and fifteenth
days of the month at midnight); the relevant parameters are recorded in the historic data
file Service. This test can also be performed manually using the ForceSensor Test
command (in the Service submenu), but no results are recorded. In both cases, one of the
two following messages is displayed if the test fails: Replace SensSoon or Replace
SensNOW.

12.1.18 Replace SensSoon

• Alarm type: Fail alarm
• Non-abbreviated description: Replace Hydran 201 sensor soon
• Priority: Medium
• Parameter(s) involved:
– SensRep Soon; SysOK Relay;FaultTrig. submenu; Section 4.5.7 on page 4-23
– No set point nor delay
12-10 Rev. 6, March 2011 Part 17997