Table of Contents
Advertisement
WARNING:
Unauthorized action may lead to major danger or equipment damage.
System troubleshooting:
Abnormal
No.
phenomenon
The fans cannot
1
start.
The cooling unit
2
cannot start.
Forgot the
3
password?
Chapter 7: Troubleshooting
Possible cause
The power supply is
abnormal.
The fans are abnormal.
The input voltage is
abnormal.
The EPO is triggered.
The heater protector is
triggered.
Forgot the user password or
admin password?
Elimination method
Make sure the input voltage is within the
permissible range, the circuit breaker or
switch is set at ON, and the cooling unit is
correctly grounded.
Make sure that each fan wiring is
normal and change the abnormal fans if
necessary.
tolerable range of rated value, and the
breaker or switch is put in ON position
and properly grounded.
2. If the voltage and the other things are
normal, contact service personnel to
see if the unit setting is wrong.
The main switch or breaker's handle is
at the middle position. Adjust the handle
down to the OFF position and then lift it to
the ON position and supply the power.
Use a multi-meter (short circuit is normal)
to inspect if the over-temperature protector
is triggered. If it is triggered, contact
service personnel to carry out reset (the
heater should be removed). After reset,
Contact service personnel.
43
Chapter 7
Troubleshooting
Advertisement
Table of Contents
