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Installation and operating instructions • Isar BOOST5 • Ed.06/2024-05 17
6.6 Alarm codes
LED in range 1-6 flashes green + LED flashes red
Alarm1 Low water
If there is low water on the suction side for more than 7seconds, the alarm is
displayed.
• Check the water supply on the suction side.
• Fill pump.
The product restarts automatically after 1min, 15min, 30min, 1hr, etc.
Alarm2 The product does not reach the set pressure.
• Contact customer service.
Alarm3 /
Alarm4 Outlet pressure below 0.2bar (damaged pipe).
• Eliminate the cause.
• To reset the alarm, switch the product off and back on with the “On/Off”
operating button (Fig.2, Item3).
• Check why pressure was reset to zero.
Alarm5 Supply voltage too low.
• Ensure a power supply of 230V ±10%.
Alarm6 Switch-off signal from the outside
Example Low water: LED 1 flashes green + red LED flashes
LED in area 1-6 lights up green + LED flashes red
Alarm1 Short-circuit
• Switch off unit.
• Contact customer service.
• To reset the alarm, switch the product off and back on with the “On/Off”
operating button (Fig.2, Item3).
Alarm2 Overcurrent
Current consumption exceeds the permissible tolerance.
• To reset the alarm, switch the product off and back on with the “On/Off”
operating button (Fig.2, Item3).
• If the alarm is still displayed, contact customer service.
Alarm3 Module temperature too high
• Check the temperature of the fluid.
• If the fluid temperature exceeds 40°C, contact customer service.
If the temperature drops below the alarm threshold, the product is automati-
cally reset.
Alarm4 Motor temperature too high.
• Check the temperature of the fluid.
• If the fluid temperature exceeds 40°C, contact customer service.
If the temperature drops below the alarm threshold, the product is automati-
cally reset.
Alarm5 Pressure sensor signal fault
• Contact customer service.
Alarm6 Volume flow sensor signal fault
• Contact customer service.
Example Short-circuit: LED 1 lights up green + red LED flashes
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