APPENDIX I
List of malfunctions:
Code
Explanation
Actions
1
Door opened during the cycle
Check and adjust micro switch of the
door and function of the interlock.
2
Open circuit in controlling temperature sensor T1
Check the sensor and connections.
If necessary, change the sensor.
3
Short circuit in controlling temperature sensor T1
Check the sensor and connections.
If necessary, change the sensor.
4
Open circuit in verifying temperature sensor T2
Check the sensor and connections.
If necessary, change the sensor.
5
Short circuit in verifying temperature sensor T2
Check the sensor and connections.
If necessary, change the sensor.
6
Disinfection temperature over set value
Temperature 15 °C over set value.
Check heating coils and contactor; steam pressure and
steam valve in steam heated machines
7
Not in use
8
The machine does not get water
Check water supply solenoid valves, mud filter and
water level switch in tank, air valves must be open.
9
Water level switch of the tank does not change
position or circulation water pump does not work.
There is water in tank wrong time.
Check water level switch and pump.
Check function of air valves.
Drain blocked ? Leakage of water valves ?
10
Fault in heating, the set temperature has not been
reached within 20 min.
Check heating contactor, coils and overheating
protector.
There is water in chamber bottom (water trap) =>
check the function of siphon valve.
Air valve(s) are not open. foam in steam generator.
11
Low circulation water pressure
Check circulation pump
and it’s running direction
.
Foaming ?
Check pressure sensor. Air valves and siphon valve
must be closed during recirculation wash.
Chamber outlet or drain sieve blocked ?
Check function of tank valve (part 2.40); only in open air
gap models.
12
Temperature difference between sensors T1 and
T2 is over 2 °C
Calibrate the temperature sensors T1 and T2
13
Water tank is not empty
Check pump is running. Check function of water level
switch. Drain blocked ?
14
Door is not interlocked
Check the function of interlock and micro-switch
15
Not in use
16
Not in use
17
Not in use
18
Thermal relay of circulation water pump tripped
Check the reason for pump’s overload (obstacles inside
piping ?) Reset the thermal relay.
19
Door interlock opened during the cycle
Check and adjust micro switch of the door lock.
20
Temperature has dropped under the set value
During disinfection the temperature has dropped under
the set value. Check: heating coils, contactor
and overheating protector. Foam or scale in steam
generator?
21
Not in use
22
Temperature difference between sensors T1 and
T2 is over 10 °C
By starting the machine the temperature difference
between sensors is over 10 °C, calibrate temperature
sensors T1 and T2.
23
Chemical container empty
Fill/change the container, check detector
24
Door is not closed in the beginning of the cycle
Check door micro switch and door functions
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