GALaxy eHydro Elevator Controller Section 6 – Main CPU Faults & Detailed Faults
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Table 6-0: Main CPU Faults
Possible Cause/Suggested Fix
The RUN input or
output has failed on.
• The RUN relay has failed on or RUN relay contact has
failed in the closed position. Replace the RUN relay.
• Faulty RUNi input. Replace the RUNi input chip.
• Faulty RUN output. Replace the RUN output chip.
• The solenoid common is shorted to GND. Refer to the
schematic and check the circuit with a meter.
Run inhibit from reset
count
• Once the car is in Reset mode, the controller attempted 5
times to come off reset but it keeps being sent back to the
reset mode because of a fault condition.
The S10 input is off.
No Power on S10
Safety string fault
occurs from the
following conditions:•
The safety string is
open from one of the
following inputs being
off: GOV, HSS, EXT,
CSS, CTS, FFS, CST,
MRSW.
• The safety string is open (One or more of the safety inputs
are off). Refer to the job prints and check all circuits ahead
of the MRSW input.
The SD input or
output has failed off.
• Faulty SDi input. Swap input board to see if SDi input chip
is bad and replace input board if necessary.
• The SD solenoid is shorted to GND at the SD terminal.
Refer to the schematic and check the circuit with a meter.
• Faulty SD output. Swap the output with another device to
verify if the output is bad and replace if necessary.
The SD input or
output has failed on.
• Faulty SDi input. Swap input board to see if SDi input chip
is bad and replace input board if necessary.
• The SD test jumper was left on the output after an I/O
test. Remove test jumper.
• Voltage back feed through the SD coil. Verify that the SD
solenoid is connected to the solenoid common. Refer to the
schematic and check the circuit with a meter.
• Faulty SD output. Swap the output with another device to
verify if the output is bad and replace if necessary.
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