ICMA S167, Assembly, Installation And Operation Instructions

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ELECTRONIC CIRCULATOR FOR SOLAR THERMAL SYSTEMS - Art. S167
FI.S167.EN.C - 03/2023
Icma SpA - Via Garavaglia, 4 - 20012 Cuggiono (MI) ITALY Tel: +39 02 97249134 - +39 02 97249135 - www.icmaspa.it - sales@icmaspa.it Icma SpA - Via Garavaglia, 4 - 20012 Cuggiono (MI) ITALY Tel: +39 02 97249134 - +39 02 97249135 - www.icmaspa.it - sales@icmaspa.it
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6. CONTROLS ON CONTROL PANEL
6.1 Fault code display status
NO. Explanation
1 The pump I,II,III gear display
2 The pump automatic gearshift display (AUTO)
3 The pump PWM gear display
4 The pump gear shifting button
Fault code Fault description
Gear light 1 flickers
Over-voltage protection, restart after voltage returns to normal (low voltage
protection value 270 +5V)
Gear light 2 flickers
Under-voltage protection, restart after voltage returns to normal (low-voltage
protection value 165 + 5V)
Gear light 3 flickers Over-current protection, restart after 5S
Gear light 4 flickers Under-load protection, restart after 5S
Gear light 5 flickers Over-Phase protection, restart after 5S
Gear light 1+2 flickers Locked-rotor protection, restart after 5S
Gear light 1+3 flickers Start failure (asymmetric motor parameters), restart after 5S
Gear light 1+4 flickers
Over-heat protection, power reduced to half of the maximum power, ambient
temperature restored to the range of use, power restored to the maximum.
Gear light 1+5 flickers
Over-temperature protection, restart after environment temperature restores to
5S in use range
Special note:
1. If I and II display at the same time means BL1. If I and III display at the same time means BL2. If I and Auto display
at the same time means BL3.
2. If II and III display at the same time means HD1. If II and Auto display at the same time means HD2. If II and P
display at the same time means HD3.
After the power is turned on, the position 6 light area displays the status. During operation, the gear display light is
on constantly. When the electric pump can not operate properly, the gear display light will flash continuously, the
corresponding faults are as shown below: