Zanussi Ls3 Manual

							TSE-P  02.01  LF 31/35 599 34  60-32 9.2 FUNCTIONAL TESTING CYCLE
The functional testing cycle is an abbreviated washing programme for use by service engineers only.
The testing cycle enables the engineer to check all the functions which make up a traditional washing
cycle (in effect, the test simulates a normal cycle).
To access the test procedure, it is necessary to press a combination of keys. Correct operation of the
appliance can be checked rapidly.
The procedure is designed to perform the following phases in the sequence shown below:
Resin washing – Hot wash
 – Regeneration – Drying
These phases consist of the following sub-phases:

Water fill to stabilized pressure switch level + supplementary fill.

Motor activation (objective: puls_2 washing).

Reduction of washing time.

Stabilization of water temperature in hot phase (objective 50ºC).

Normal drain.

Performance of regeneration (irrespective of the regeneration level selected).
Overal duration of cycle: 16 - 18 minutes approx.
The test cycle is not taken into consideration in the count for “SPECIAL” regeneration.
9.2.1STARTING THE TEST CYCLE
Door closed – dishwasher switched OFF
1.Press and hold down keys [S1] & [S3
]
simultaneously
2.Press [S0] to switch the dishwasher on

LED [LD3] flashes to indicate that the
function has been selected.

The LED continues to flash until the
function is exited.

Cycle phase LEDs [LD9], [LD10] light.
After 3 seconds, the function starts automatically.

LED [LD9] remains lit, while LED [LD10] switches off.

The phases of the cycle are indicated in sequence by LEDs [LD9], [LD10], [LD11], which switch
on and off as the test proceeds.
If the door is opened, the cycle is interrupted; when the door is re-closed, the cycle resumes
(after 3 seconds) from the point at which it was interrupted. The same applies in the event of a
power failure.
To cancel the cycle, press programme key [S3].
At the end of the cycle, LED [LD11] lights, while LED [LD3] continues to flash.

To exit the test procedure, open the door or switch the appliance off by pressing [S0]. 
						

							TSE-P  02.01  LF 32/35 599 34  60-32
9.3  CHECKING THE EFFICIENCY OF THE COMPONENTS
In order to facilitate testing of the components, a TEST PROCEDURE has been created showing the
contacts to which the probes of the tester should be connected and the theoretical reading for each
component.
9.3.1PROCEDURE (after removing the door)

Remove the modular connector from the control
board, connect the probes of the tester to the
points indicated in the table, and compare the
actual reading with the theoretical value (in
Ohms).=

Take special care when fitting the connector to
position A1 - A2.
If this connector is fitted incorrectly (i.e. reversed), the
board will not be powered and the appliance will
therefore not function (because it will not accept any
commands).
Table of contact points on the connector of the board and theoretical ohmic values
COMPONENTSCONTACTS
CORRECT VALUENOTES
L  A10 Ω
ΩΩ Ω= * POWER CABLE  &
(PU) – ON/OFF SWITCH
N  B10 Ω
ΩΩ Ω=
With ON/OFF key
pressed
(RR) – HEATING ELEMENT +
(TS) – SAFETY THERMOSTATA2  C725 Ω
ΩΩ Ω=
== = ±==
== =8%Connected in series
(2100W)
INFINITEEmpty position (1-2)(PR) – PRESSURE SWITCHB1  C70 Ω
ΩΩ Ω=Full position (1-3)
(IP) – DOOR MICROSWITCHB2  D10 Ω
ΩΩ Ω=Door closed
(DD/DB) – INTEGRATED DISPENSERD5  D71.500 Ω
ΩΩ Ω=
== ==± 8%OK
INFINITEWith rinse-aid(SB) – RINSE-AID DISPENSERF3  F40 Ω
ΩΩ Ω=Without rinse-aid
INFINITEWith salt(SS) – SALT SENSORF1  F20 Ω
ΩΩ Ω=Without salt
6.030 Ω
ΩΩ Ω=
== ==± 8%(at 20ºC)(ST) – TEMPERATURE SENSORE3  E41.010 Ω
ΩΩ Ω=
== ==± 8%(at 65ºC)
(GT) – TACHYMETRIC SENSORE1  E2210 Ω
ΩΩ Ω=
== ==± 8%OK
(MV) – FAN MOTORC13  D3725 Ω
ΩΩ Ω=
== ==± 8%OK
(ER) – REGENERATION SOLENOID
VALVEC13  C112.500 Ω
ΩΩ Ω=
== ==± 8%OK
(EC) – FILL SOLENOID VALVE +
(AA) – ANTI-FLOODING DEVICEC13  C94.100 Ω
ΩΩ Ω=
== ==± 8%Connected in series
C13  C550 Ω
ΩΩ Ω=
== ==± 8%Run winding
(PL) – WASHING MOTOR
to the 2 Motor cables
(white / brown)160 Ω
ΩΩ Ω=
== ==± 8%Auxiliary winding
(PS) – DRAIN MOTORC13  C1185 Ω
ΩΩ Ω=
== ==± 8%OK
Note: -  * = The contacts used for measurement  L  N are the pins of the plug on the power cable. 
						

							TSE-P  02.01  LF 33/35 599 34  60-32 9.3.2COMPONENT CONNECTION DIAGRAM 
						

							TSE-P  02.01  LF34/35 599 34  60-32 9.4 T ABLE OF AL ARM CODES
In order to facilitate identification of an ALARM CONDITION indicated on the control panel and which
causes one of the safety features to intervene, the possible causes for each alarm condition are listed in
the table below together with suggested solutions.
Note:
- The control board is unlikely to be
the cause of an alarm condition, and
should therefore be checked last.
ALARMS
Codice LedsSAFETY DEVICE POSSIBLE CAUSES
WATER FILL TIME-OUTThe correct level is not reached.
The pressure switch does not
switch to FULL (1-3) within 4
minutes after activation of the
solenoid valve
 [AL 5][LD9]PRESSURE SWITCH ON
“EMPTY” (1-2)
When the level has been reached,
the pressure switch does not
return to 1-3 within the maximum
time of 60 secondsc
a) The tap on the fill hose is closed.
b) Mains water pressure 90°C)
*) [AL 1/2][LD9] +
[LD11]NTC SENSOR OPEN
Range  >  26.700  Ω
ΩΩ Ω
a) Temperature sensor faulty (open)
b) Electrical connections interrupted/disconnected
c) Temperature too low (< -10ºC )
 [AL 7][LD10] +
[LD11]MOTOR INOPERATIVE
a) Motor winding interrupted/short-circuited
b) Electrical connections loose / interrupted
c)  Motor jammed (foreign bodies)
d) Capacitor interrupted/short-circuited
e) Tachymetric sensor interrupted/short-circuited
 [AL 8]
[LD9] +
[LD10] +
[LD11]
MOTOR TRIAC SHORT-
CIRCUITEDa) Control board (Triac short-circuited)
 In alarm conditions - [AL4], [AL5], [AL6], [AL7], [AL8]    Dishwasher stopped – the corresponding LEDs flash
 

 To cancel the alarm condition    Press (S0) to switch the dishwasher off.
 
 When the dishwasher is switched on again    The cycle resumes from the point at which it was interrupted.
 
*) In alarm conditions - [AL1/2], [AL3] ]   The cycle is completed, and no alarm is displayed to the user; the
condition is simply stored in memory for inspection by service engineers. 
						

							TSE-P  02.01  LF
35/35 599 34  60-32 9.5  SUMMARY OF FUNCTIONS
This table contains a brief summary of the procedures for all the
functions available to the service engineer
Function Activation of function
Selection of response /
Commencement of function
Brief description / Comments
Keys LED (s)
Key LED(s)
Selection of
regeneration
[S1 + S2
]
S0 
(On/Off)

LD1
Lit for 5 seconds
 
the code stored in
memory flashes
S1

LD1
Lit for 5 seconds
 
the code stored in
memory flashes
(description on page 19 / section 5.5 Selecting the regeneration level”)
 Temp …….  >8°F /4°D … >30°F /18°D … >50°F /29°D … >70°F /40°D …>90°F /50°D
 Level …….   WH1 ………..  WH2 …………  WH3 ……….   WH4                  WH5     
 N° flashes ….  1 …………….  2 ……………… 3 ……………. 4 ……………..  5
 ex.  level WH3, sequence:- [(flashes, 5sec pause) .…repeated for 1min
Display alarms
stored in
memory
[S2 + S3
]
S0 
(On/Off)

LD1 + LD2
 + LD3
flashing
S1

LD1
flashing
(description on page 22 / section 7.2 Displaying the alarm codes”)
 [AL5]   [AL6]      [[AL4]      [AL3]     [AL1/2]           [AL7]                  [AL8]
    LD9     LD10
    [LD9+LD10]
    LD11
   [LD9
+LD11]
    [LD10
+LD11]
    [LD9
+LD10
+LD11]
The last 3 alarm codes stored in memory are displayed by pressing
 
 S1 repeatedly
Cancel alarms
stored in
memory
[S2 + S3
]
S0 
(On/Off)

LD1 + LD2
 + LD3
flashing
S3

LD1 … LD14
All LEDs lit
(description on page 22 / section 7.3 Cancelling alarms)
The LEDs light briefly for 1 second, then 2 seconds pause. Repeated twice.
Component
diagnostics
[S2 + S3
]
S0 
(On/Off)

LD1 + LD2
 + LD3
flashing
S2

LD9
lit
(description on page 30 / section 9.1 Component tests)
  EV         DD            PL             RR          ES                ER                          PS       Fine
 20sec    60sec         60sec          20sec        60sec                  60sec                      60sec               -----
                                                                                                                                       
 LD9    LD10
    [LD9+LD10]
    LD11
   [LD9
+LD11]
    [LD10
+LD11]
    [LD9
+LD10
+LD11]
Test cycle
[S1 + S3
]
S0 
(On/Off)

LD3
flashing
Automatic
startafter 3 seconds

LD3
flashing
(description on page 31 / section 9.2 Test cycle)
Overall duration of cycle: 16 – 18 minutes
Stop function
All the functions listed above can be cancelled during execution. To do so, press 
S0 
On/Off to switch the dishwasher off.