4
Troubleshooting
Case Designation Description Details Action
D8 always ON (more than 10s),
D9 and D10 are always OFF:
the in�yj is in UPL state
Power down the in�yj, insert an in�stik
with a valid software and reapply power
D8 always ON, D9 flashing and
D10 is always OFF: software
loading from an in�stik in progress
Wait about 1 minute
POWER Led is OFF Go to case #1
Issue on board Change the in�yj-V3 board
4 D2 HL Relays (K2-K3)
cmd status
Should always be ON
If OFF, possible causes:
High Limit situation happens Go to HL section
Remote heater cable or the
Probes cable disconnected
Check remote heater cable or
Probe cable
F2 burnt (on CE models only) Check F2
5 D6 Pump 1 low relay
(K6) cmd status
Should always be ON when the
Pump 1 is running in low speed,
and OFF otherwise�
If Led ON and pump
isn’t running:
Issue on pump
and connection
Check pump connection
F2 burnt Check F2
If Led OFF and pump running
in low speed:
Issue on relay K6 Change the in�yj-V3 board
6 D7 Pump 1 high relay
(K7) cmd status
Should always be ON when the
Pump 1 is running in high speed,
and OFF otherwise�
If Led ON and pump isn’t running:
Issue on pump and connection Check pump connection
F2 burnt Check F2
If Led OFF and pump running in
high speed:
Issue on relay K7 Change the in�yj-V3 board
7 D5 Pump 2 relay (K5)
cmd status
or
Kinetic protection
(-KR option) relay (K5)
cmd status
Should always be ON when the
Pump 2 is running, and OFF
otherwise�
If Led ON and pump isn’t running:
Issue on pump and connection Check pump connection
F2 or F4 burnt Check F2 and F4
If Led OFF and pump running:
Issue on relay K5 Change the in�yj-V3 board
8 D4 Regulation relay
(K4) cmd status
Should always be ON when
the system is heating and OFF
otherwise�
If Led ON and no heating:
Issue heater connection Check heater connection
F2 burnt
(on CE models only)
Check F2
Issue on remote heater Change remote heater
If Led OFF and heating:
Issue on relay K4 Change the in�yj-V3 board
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