Fault Codes - Malmet WDS Operation, Maintenance And Installation Manual

WDS
Operation, Maintenance and Installation Manual
5.4

FAULT CODES

The device is controlled by a sophisticated micro-processor. The processor has fault detection capability and indicates
faults by code on the LCD display as well as an audible buzzer.
Software V3.03
FAULT STATE
CODE
901 System
902 System
903 System
904 System
905 System
101 Power On
102 Power On
120 Power On
141 Open Door
143 Open Door
149 Open Door
181 Close Door
183 Close Door
220 Cold Flush Fill
221 Cold Flush Fill
241 Cold Flush Run
242 Cold Flush Run
243 Cold Flush Run
244 Cold Flush Run
260 Cold Wash Fill
261 Cold Wash Fill
281 Cold Wash Run
ISSUE 5
DESCRIPTION
Blockage
Door Open during Wash Cycle,
Internal System Communications
Error
Power interrupted during cycle
Power button cycle aborted
Water Fill Timeout - Water tank and
Steam generator
Steam Fill Timeout
Blockage at Power On
Door Overcurrent Trip
Door Timeout
Door interlock switches fault
Door Overcurrent Trip
Door Timeout
Water Level Sensor Fail
Water Fill Timeout
Low Water Level during wash
Door Open
Pump run without solenoid
Timeout before Level reached
Water Level Sensor Fail
Water Fill Timeout
Low Water Level during wash
28
Page
POSSIBLE CAUSES
P or S trap blockage to drain.
Faulty door microswitch J11,J10, Actuator,
Transformer fuse
Display Unplugged, LINK J34 removed,
Loose processor pcb
Emergency Cycle Stop button pressed,
Mains power supply interrupted, 10A Circuit
breaker tripped
Need Service tech to perform Purge Reset
procedure
Note – wash cycle is started
Need Service tech to perform Purge Reset
procedure
Water Level Sensor Failed or Water supply
low flow or turned off, Water Fill solenoids
failed
Steam fill solenoid failed, Steam Level
Sensor Failed, Blocked inlet hose
P or S trap blockage to drain. Faulty
sensor.
Door is obstructed, Actuator Motor faulty,
Door hinges seized
Actuator Motor Faulty, Blown transformer
fuse, Door hinges seized
Door Interlock Switch J11 stuck on when
door opens.
Door is obstructed, Actuator Motor faulty,
Door hinges seized
Actuator Motor Faulty, Blown transformer
fuse, Door hinges seized
Dirty Conductivity Sensor Probe, faulty
connections, faulty conductivity module,
Water Level Sensor Failed or Water supply
low flow, Water Fill solenoid failed, water
supply off.
Check cycle time. Pump rate to high, Water
Leakage
Door opened during wash cycle, faulty door
interlock switch J11 J10
Check Cycle Times parameters, Faulty
solenoids
Low pump water flow, blocked rotary
nozzles, Faulty solenoid, Panel lockout
switches J8 open circuit. Faulty level probe.
Door interlock switch J11 J10
Dirty Conductivity Sensor Probe, faulty
connections, faulty conductivity module,
Water Level Sensor Failed or Water supply
low flow, Water Fill solenoid failed, water
supply off.
Low pump water flow, blocked spray
nozzles, Faulty solenoid, Panel lockout
switches J8 open circuit. Faulty level probe.
15/03/2016