Heath Consultants Personal Surveyor (PS200 Series) - Manual (Page 61)

4-11
ALARMS
Fig. 4-9 Check Fault
3) If a “ZERO FAULT” warning and a flashing spanner symbol
appear, alternating with an LEL gas value as shown in
Fig. 4-10, leave instrument on for 30 to 60 minutes then switch
instrument OFF and ON again. If fault remains, return
instrument to a GMI approved Service / Repair facility.
Fig. 4-10 Check Fault