Nibe F2040 - Page 72

279 - S. fault Tho-D
Is the hot gas sensor (Tho-D)
correctly connected?
YES
YES
Replace the control board.
Action.
Defective sensor - replace.
Are the characteristics of the hot
gas sensor (Tho-D) OK?
NO
NO
NIBE™ F2040Chapter 6 | Troubleshooting70