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TROUBLESHOOTING
CO
level is not displayed on the MAIN PCB
2
"0" is displayed on the MAIN PCB.
Check whether K9 in the MAIN PCB is
switched off.
Is K9 switched off?
Or, are the options set?
Yes
Swich on the MAIN PCB option switch
K9
1)*
or set the options
the power, and then check whether
CO
level is displayed.
2
Is CO
level displayed?
2
Yes
Proceed to the next installation step.
Caution
The error in the CO
The operation test needs to last longer than 2 minutes to be valid.
(Continued)
1)*
2)*
2)*
again, reset
Sensor is only detected after 2 minutes when powered on.
2
14
No
Switch off K9, and then check again.
Or, set the options.
No
Replace the MAIN PCB.
1)*
Applicable models: RHF*****
2)*
Applicable models: AN*********
1)*
2)*
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