Bayrol Pool Relax Bromine, Instruction Manual, Page: 58 / 61

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20 Troubleshooting and fault elimination
The following table lists typical problems that may occur when operating Pool Relax. Each of these problems is accompanied by a
description of its possible causes and measures to correct the fault.
The table is subdivided into the pH, mV (redox), O2 and temperature modules.
Type of problem Possible causes Elimination of problem
pH measurement
pH control measurement and device
display differ
Calibration is faulty or has not been
performed for an excessively long time
Recalibrate the system
Calibration fault during the
pH calibration
Faulty input of calibration values Repeat the calibration
Electrode is dirty or faulty Clean the electrode in 5-10 % hydrochloric
acid and rinse with distilled water. If it is not
possible to calibrate the electrode after this
treatment, it must be replaced.
Humidity in the cable combination Dry or replace the cable combination
Measuring amplifier is faulty Device must be repaired or replaced
pH control / pH dosing
A dosing rate of 0 % is displayed on
the device although there is a deviation
between the actual value and the
setpoint
Dosing is blocked by an alarm (flow,
level or dosing time alarm)
Remove cause of alarm, quit alarm
Power-on delay still running Wait for the power-on delay to end
Dosing pump is not working although
the dosing rate displayed on the device
is not equal to 0 %
Dosing pump fuse is blown Replace the fuse (1 A slow)
Dosing relay is faulty Replace the faulty relay
Dosing pump is faulty Replace the dosing pump
Dosing pump is working but there is no
pH correction
Container is empty Replenish the pool care product
Dosing pump drew air and is no longer
dosing
Purge the air from the dosing head
pH value is fluctuating around the
setpoint
Dosing rate of the pH control is too high
Set the p-range to a higher value to reduce
the dosing rate. A reduction in the minimum
switch-on time prevents overdosing as well.
pH value differs from the setpoint over
an extended period
Dosing rate of the pH control is too low Set the p-range to a lower value to increase
the dosing rate.
As well, an increase in the minimum switch-
on time results in a more rapid approach of
the setpoint.
Redox measurement
Redox potential is not equal to the
control measurement
Calibration is faulty or has not been
performed for an excessively long time
Recalibrate the system
Calibration fault during redox
calibration
Faulty input of calibration values Repeat the calibration
Electrode is dirty or faulty Clean the electrode in 5-10 % hydrochloric
acid and rinse with distilled water. If it is not
possible to calibrate the electrode after this
treatment, it must be replaced.
Humidity in the cable combination Dry or replace the cable combination
Measuring amplifier is faulty Device must be repaired or replaced