Test Program; Error Messages - Asko T700 Series Service Manual

TEST PROGRAM AND ERROR MESSAGES

TEST PROGRAM

TEST PROGRAM TEST PROGRAM
TEST PROGRAM TEST PROGRAM
The machine must be in its starting state (obtained
by pressing the main power button).
Short-circuit the outputs ST4-1 and ST4-2.
Start the test program.
Start
T780: Start the condensation water
P1
pump.
or wait for 60 seconds and the test
P2
program will continue.
The program heats, increasing the temperature by
57° F (14° C) in a maximum of 10 minutes, then
allows it to cool for 5 minutes (testing that the
heating element is working).
The value detected by the humidity sensor can vary
according to the environment and on whether there
is wet clothing in the dryer.
ERROR MESSAGES – T760/T780 ERROR MESSAGES – T760/T780 ERROR MESSAGES – T760/T780 ERROR MESSAGES – T760/T780 ERROR MESSAGES – T760/T780
Error messages will display in the LED window if a
fault occurs while a program is in progress. The table
below defines each possible error message. Once the
problem is resolved you may have to turn the power
off then on to clear the error message.
M e s s a g e : T h r e e h o u r s M e s s a g e : T h r e e h o u r s M e s s a g e : T h r e e h o u r s
M e s s a g e : T h r e e h o u r s M e s s a g e : T h r e e h o u r s
The machine has run the maximum drying time
(three hours).
Possible solutions:
• Make sure both fuses are intact.
• Clean the lint filter.
• Make sure exhaust hose is clear (T760).
• Make sure the condenser (T780) is clear of lint
and dust.
• Clear message by turning the power off then on.
18
Temperature measured
by thermistor
Amplified voltage value
from humidity sensor
Message: Overflow (T780) Message: Overflow (T780)
Message: Overflow (T780) Message: Overflow (T780) Message: Overflow (T780)
The condensed water container is full. This container
is located at the top left corner of the dryer.
Possible solutions:
• Make sure the condensed water container is
empty. If draining into a drain pipe, make sure
the black rubber hose is not kinked or blocked.
The drain should not be higher than 40 inches
(1016 mm) from the floor.
• Make sure the condensation pump is not
blocked.
M e s s a g e : S e n s o r M e s s a g e : S e n s o r M e s s a g e : S e n s o r M e s s a g e : S e n s o r M e s s a g e : S e n s o r
This can appear if there are dry clothes in the drum
when the unit is started or if the humidity sensor is
not installed properly in the fan housing or control
unit. In this case, the machine will stop after 20 minutes.
It could also be caused by a fault in the humidity
sensor. If the message does not disappear when you
open the door, check the humidity sensor.
M e s s a g e : T h e r m i s t o r M e s s a g e : T h e r m i s t o r M e s s a g e : T h e r m i s t o r
M e s s a g e : T h e r m i s t o r M e s s a g e : T h e r m i s t o r
The thermistor may have become disconnected or
have an internal fault. A serviceable thermistor has a
resistance of between 60 and 40 kW at 68° F–86° F
(20° C–30° C).
Possible causes and solutions:
• The thermistor is not properly installed in the
fan housing. In this case, the heating element
will remain switched in for as long as the
thermistor cannot detect the selected air
temperature. This can lead to an excessively high
air temperature in the drum.
• The filter could be blocked. In this case, the
overheat protection device is tripped and the
machine will stop. Once the unit is cool, press
the reset button on the rear of the machine to
start the machine.
• The incoming phase is missing.
– Error L1 – the machine will stop after 20
minutes. Low heating element power (720
or 600 W).
– Error L2 – the machine will not start.
Indicator lamp not lit.
– Error L3 – the machine operates but the
running time is too long (low heating
element power (1900W)).
• The fan motor stops after a few seconds.
Overheat protection trips, heating element and
control damaged.