Section 5 • Fault Codes
Part No. 227656
GR-20J • GR-26J
5 - 9
September 2016
FAULT CODE CHART
Error Source
Error Type
ID
Name
ID
Name
Condition
Solution
17
Stand by
pump
The current sensor of the
pump detects a current
other than zero when the
pump is not working.
It is an internal fault.
Replace the controller.
18
Pump I=0
The current sensor of the
pump detects a current of
zero even though the
pump is working.
Check the connection of the
pump: if the pump is not
connected, current cannot flow
and the diagnostic fails.
Otherwise, it is an internal
problem.
19
Periodic error
#1
The base board has not
responded to the request
as expected. Th e
controller board has asked
the base board to leave its
drive input inactive but it is
active.
It is an internal fault.
Replace the controller.
20
Capacitor
charge
1) An external charge is in
parallel with the capacitor
and reduces the current of
the recharge circuit,
thereby preventing the
capacitors from charging.
2) There is a problem with
the charging circuit and
the controller must be
replaced.
When the key is connected, the
controller tries to charge the
power capacitors via a resistor
and checks whether the
capacitors are charged. If they
do not charge, an alarm is
generated. The main driver is
not closed.
21
Charge
control lamp
incorrect
During stand-by the field
voltage should be approx.
½ V. This alarm is
generated if the field
voltage differs from this
value.
The possible external causes
are: incorrect connection of the
excitation wires, leakage to the
framework of the platform.
Otherwise, it is an internal fault.
02
Controller
logic
board
22
VMN low
The VMN voltage of one
of the drive motors is low.
This alarm appears during
stand-by. Check : internal motor
connections; electric cable
connections; leakage from the
motor to the framework of the
platform. If everything is OK, the
controller has an internal fault
