IVT X Series User Manual

Rectify interference
6 720 643 196 (2010/02)
20
2.3.18 Check connection to AHB
2.3.19 Check connection to I/O circuit board
Description: No contact with AHB board.
Check Action
Is the green LED on the AHB board flash-
ing?
yes: B Check the CANbus connections and terminations.
no: B Check the CANbus connections and terminations.
Didn’t that help?
B Replace the AHB board.
Tab. 18
6 720 643 196-15.1I
Description: No contact with I/O circuit board.
Check Action
Is the green LED on the I/O circuit board
flashing?
yes: B Check the CANbus connections and terminations.
no: B Check the CANbus connections and terminations.
Didn’t that help?
B Replace I/O card.
Tab. 19
6 720 643 196-16.1I

IVT X Series Specifications

General

Brand	IVT
Model	X Series
Category	Heat Pump
Language	English