WESCO NAVY WMA504EP, Manual

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DIAGNOSE
FAILURE 85: RTC LOW BATTERY
Failure 85 occurs when there is no battery available at the real time clock, or if the power of the battery is too
small to make the real time clock run correctly.
DIAGNOSE:
Replace the CPU board.
FAILURE 95: WATCH DOG
If the watch dog has been activated, message 95 is logged in the Error log register. If this occurs often, ask
the help of a technician.
FAILURE 300-353: MITSUBISHI INVERTER ALARM MESSAGE
Always make sure you have the correct inverter parameter settings in the inverter, especially when you have
replaced an inverter. If you are not sure go to the Configuration menu and select „Inverter Menu…“, set the
correct machine type and supply voltage and load the parameters from the wash computer to the inverter
once more. If the correct parameters are not in the inverter all kind of inverter alarms may occur. See also
inverter manual (available on request) for more info.
96
Err N° Failure Failure Name Explanation
300 Err OC1 Overcurrent See detailed explanation below
301 Err OC2 Overcurrent See detailed explanation below
302 Err OC3 Overcurrent See detailed explanation below
303 Err OV1 Overvoltage See detailed explanation below
304 Err OV2 Overvoltage See detailed explanation below
305 Err OV3 Overvoltage See detailed explanation below
306 Err THT Inverter overload See detailed explanation below
307 Err THM Motor overload See detailed explanation below
308 Err FAN Fan stopped Repair the cooling fan (clean or replace if necessary)
309 Err OLT Stall prevention See detailed explanation below
310 Err BE Brake transistor Short circuit in brake transistor circuit. Power off
immediately! Replace the inverter.
311 Err GF Ground fault Output overcurrent to ground.
1) Check the motor cable and motor for ground faults.
2) Disconnect the motor cable and try again. If you still
have the error, replace the inverter.
312 Err OHT* Ext thermal relay External thermal relay (TRM module, see electrical
scheme) for motor protection tripped. TRM module was
only used on certain machines with MCB controller and
A500 inverter.
313 Err OPT Option See detailed explanation below
1. Check if the Central Soap Dispensing System
operates correctly.
Repair Liquid Supply Central Dispensing
System in case of failure.
2. Check if the wiring of the input signal „On Hold“
is not damaged.
If the wiring is damaged: repair the wiring.
3. Check the wash computer.
(Inputs can be checked one by one in the
Service menu)
If the input of the wash computer is not
functional, replace the wash computer.