Heath Consultants GT Series - Manual (Page 119)

11-15
ALARMS
If fault remains, return instrument to an approved
Service / Repair facility.
alternating with
Fig. 11.9 Sensor Fault
2) If a “ZERO FAULT” flag and a flashing spanner
symbol appear, alternating with a gas value as
shown in Fig. 11.10, leave instrument on for 30 to
60 minutes then switch instrument Off and On again.
If fault remains, return instrument to an approved
Service / Repair facility.