General Monitors S4000TH Error F9: Gas Check Period Exceeded

General Monitors S4000TH · taken from the manufacturer’s manual, pages cited

Error codeF9

The unit has been in Gas Check Mode longer than 12 minutes with test gas applied. The manual's first action is: “Place the magnet over the GM logo on the cover to return the unit to normal operation.”

Model
General Monitors S4000TH
Display shows
Gas Check Period Exceeded (F9)
Type
Error code
Source
Manual p. 40

What F9 means

Gas Check Period Exceeded p. 40

Common causes

  • If the S4000TH is left in the Gas Check Mode for more than 12 minutes with test gas applied. p. 40

Safety warnings — read before you start

  • WARNINGWARNING. Only suitably skilled and competent personnel should carry out installation and maintenance. p. 16
  • WARNINGWARNING. The S4000TH Intelligent Sensor contains components, which can be damaged by static electricity. Special care must be taken when wiring the system to ensure that only the connection points are touched. p. 16
  • WARNINGWARNING. Acetic acid will cause damage to metal components, metal hardware, ceramic IC’s, etc. If damage results from the use of a sealant that outgases acetic acid (RTV silicone), the warranty will be void. p. 9

What to do

  1. Place the magnet over the GM logo on the cover to return the unit to normal operation. p. 40

If F9 is still not resolved

  • Place the magnet over the GM logo on the cover to return the unit to normal operation. p. 40
    “Place the magnet over the GM logo on the cover to return the unit to normal operation.”

This page summarises what the manufacturer’s manual says about F9; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with General Monitors. Found a mistake? Report an error.