TROUBLE SHOOTING
1) Self-Diagnosis Function upon Initial Power-On
1-1) When the unit is plugged into the power, MICOM diagnoses the status of the temperature
sensors in a few minutes.
1-2) If defective sensor is found after Self-Diagnosis, relevant Display LEDs will blink at an interval of
0.5 sec. (Refer to Self-Diagnosis Check List)
1-3) During a state that a defective sensor were found and its relevant LED were blinking, it would\
only recognize the Self-Diagnosis button combination and it does not do the normal display. But,
the temperature will be controlled through the Emergency Operation.
1-4) To release these error codes, fix all the problems with the defective sensor or press the Power
Freeze and the Vacation (or Power Cool) buttons for 8 seconds.
2) Self-Diagnosis Function during Normal Operation
2-1) When the the Power Freeze and the Vacation (or for 30 seconds) buttons are held down for 6
seconds at the same time during normal operation, the temperature setting display will blink at an
interval of 0.5 sec for 2 seconds. When the Power Cool and the Operation buttons are held down
for 8 seconds (including the 2-second LED blinking) at the same time, it sends out "Ding-Dong"
sound and goes into the Self-Diagnosis function.
2-2)
When it goes into the Self-Diagnosis, the entire display panel goes off and when there is any error,
relevant segments will blink at an interval of 0.5 sec. (Refer to Self-Diagnosis Check List below)
2-3) When there is error, segment blinking continues for 30 seconds and it goes to the normal
operation mode, sending out "Ding-Dong" sound, regardless of its correction.
2-4) Buttons won't work during Self-Diagnosis.
4-1-2) Self-Diagnosis Function
RSA1Z RSA1J RSA1U RSA1D Series
Press the Power Freeze and the Vacation buttons for 8 seconds at the same time.
Press the Power Freeze and the Vacation (or Power Cool) buttons for 8 seconds at the same time.
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RSA1N RSA1S Series
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