Fujitsu General 410A Error 1a: Compressor does not operate

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

Error code1a

The compressor does not operate due to synchronization or position errors. The manual's first action is: “-Check if 2-way valve or 3-way valve are open. Check the compressor. (Wiring resistance value, loose wire). -Check refrigeration cycle condition.”

Model
Fujitsu General 410A
Display shows
Compressor does not operate (1a)
Type
Error code
Source
Manual p. 24

What 1a means

Compressor does not operate p. 25

Common causes

  • Compressor detection error - The compressor speed does not synchronize with the control signal. (Including start-up failure of the compressor.) p. 25
  • Compressor position error p. 25

What to do

  1. -Check if 2-way valve or 3-way valve are open. Check the compressor. (Wiring resistance value, loose wire). -Check refrigeration cycle condition. p. 25
  2. 5 flashes p. 25

If 1a 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 24 All 410A error codes Manual details & download

This page summarises what the manufacturer’s manual says about 1a; 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.