Fujitsu General 410A Error 74: Outdoor thermistor error

Fujitsu General 410A · taken from the manufacturer’s manual, pages cited

Error code74

Outdoor thermistor error detected when outdoor temperature thermistor is open or short-circuited. The manual's first action is: “-Check connection of connector, loose, erroneous connection.”

Model
Fujitsu General 410A
Display shows
Outdoor thermistor error (74)
Type
Error code
Source
Manual p. 5

What 74 means

Outdoor thermistor error p. 5

Common causes

  • When outdoor temperature thermistor is open or a short-circuit is detected at power on or while running the compressor. p. 5

What to do

  1. -Check connection of connector, loose, erroneous connection. p. 5
  2. -Check thermistor for open or short. Check thermistor resistance value. (Ref. Thermistor Resistance Chart) p. 5

If 74 is still not resolved

The manual gives no further instruction for this code. Open the code table in the PDF or contact Fujitsu General service.

Open the manual at page 5 All 410A error codes Manual details & download

This page summarises what the manufacturer’s manual says about 74; 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 Fujitsu General. Found a mistake? Report an error.