Display Time In Operation; Display Number Of Low Pressure Stops; Reset Fault Indication - Dometic RO400 Service Manual

display time in OpeRatiOn

The water purifier is equipped with a counter for measuring
the total time of water production.
This is a valuable function, for example to estimate time to
next service.
1. Connect the water purifier to electrical and water
supplies. The product starts flushing (30 seconds)
and then stops.
2. With the product in standby, press 'calibration' but-
ton for approx 3-4 seconds and then release.
If the button is pressed too long the timer for
'filter ii' will be reset!
3. Immediately, press 'calibration' button and hold
until all three diods for 'purification level' lights up.
4. Release the button. The timer display starts.
5. Count the blinks of 'purification level I/II/III' diods
(see details below).
6. When the total number of hours have been dis-
played all three diods light up and stay on.
(If there is no blinks before all 3 diods lights up, the
total number of hours is less than 10 hours)
7. Timer display function is completed.
This is the starting point for next function, see
"

DISPlAY NUMBER Of lOW PRESSURE STOPS

how many hours?
The timer displays 1000 hours, 100 hours and 10 hours by
blinking the 'purification level' diods in sequence.
Example: A total operation time of 1044 hours will be dis-
played with:
1 blink 'purification level I'TDS LED 1
0 blink 'purification level II'
4 blinks 'purification level III'
The last digit (4 hours) will not be displayed.
Time in operation (hours)
1000 h 100 h
1 0
It is not possible to reset the counter for time in
operation.
pROduCt desCRiptiOn
"
.
10 h 1h
4 0
- 16 -
display numBeR Of lOw pRessuRe stOps
The number the water purifier stops due to low inlet pressure is
counted by the water purifier.
Any low pressure stop increase the risk for pump damages and
should be avoided, and this function is a help in this work.
1. follow the instructions for
", point 1-6.
ERATION
2. When all three diods for 'purification level' are
lightened, to confirm that timer display function is
completed, click 'calibration' button.
3. Count the blinks of 'filter I' diod.
(35 blinks indicate 35 low pressure stops.
Maximum displayed is 255. )
To interrupt the display, disconnect the electrical
supply and connect again.
4. When the total number of low pressure stops have
been displayed, the diod for 'stop' lights up for a
second and goes out.
Display of low pressure stops is completed.
how to reset the counter for low pressure stops?
This procedure also reset the timer for filter ii
change.
1. Connect the water purifier to electrical and water
supplies. The product starts flushing (30 seconds)
and then stops.
2. With the product in standby, press and hold the 'cali-
bration' button throughout points a) and b) which
takes totally 14 seconds:
a) diod for 'filter II' lights up and goes out (8 sec)
b) diod for 'filter II' lights up and goes out (6 sec)
3. Release the button.
Both timer for filter ii and counter for low pres-
sure stops is now set to zero.

Reset fault indiCatiOn

To avoid the necessity of unplugging the water purifier to over-
ride an alarm stop, a reset function is included.
This function can be used for all possible faults.
noTe! The original problem should first be eliminated!
1. When the product is in alarm state, press and hold
the 'calibration' button until the warning lights go
out.
2. Release the button, and the product will restart with
normal flushing (30 seconds).
When a reset is made to over-ride a low pressure restart at-
tempt, will the product start to produce water immediately,
without flushing.
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DISPlAY TIME IN OP-