Yokogawa Multi Channel Oxygen Analyzer System ZR22/AV550G - Manual (Page 216)

IM 11M12D01-01E 12-6
3) Error 3: Cannel card failure
This indicates that the channel card with an error has failed to operate properly. Replace
the channel card.
Before replacing the channel card, be sure to turn off power to the channel card to be
replaced by hot swap function.
4) Error 4: Control card failure
This indicates that the control card has failed to operate properly. Contact our service
office.
5) Error 5: Inter-card communication failure
If Error 5 occurs only on a certain channel, the channel card fails to operate properly.
Replace the channel card. If Error 5 occurs on all channels, the control card malfunc-
tions. Contact our service office.