4 Troubleshooting
- 48 -
Fault
Code
Fault Description
Possible Cause
Solution
Err86
PTC overtempera-
ture
The PTC thermistor is discon-
nected due to motor over-
temperature. The DI terminal
detects that the motor PTC
signal is disconnected.
1) Check the wiring. PTC indicates
the main motor PTC, which must
be connected to DI6 with function
57 and COM. If no main motor PTC
is available, DI6 is allocated with
function 0.
2) Check whether motor overtem-
perature exists. Check heat dissi-
pation of the main motor.
3) Check whether the main motor
PTC is damaged. Check whether
the PTC resistance is less than 3
kΩ independently. Short DI6 and
COM or allocate DI6 with function
0 temperately to disable PTC.
A87
Limited running
time pre-warning
The running time reaches the
set limited running time.
Clear the running time or disable the
limited running function.
Err88
Stop for air filter
maintenance
Air filter running time - Air
filter maintenance period ≥
Long-time stop pre-warning
time
1) Maintain the equipment and clear
related running time.
2) Contact the agent or Inovance for
technical support.
Err89
Stop for oil filter
maintenance
Oil filter running time - Oil
filter maintenance period ≥
Long-time stop pre-warning
time
1) Maintain the equipment and clear
related running time.
2) Contact the agent or Inovance for
technical support.
Err90
Stop for oil/gas
separation mainte-
nance
Oil/gas separator running
time - Oil/gas separator
maintenance period ≥ Long-
time stop pre-warning time
1) Maintain the equipment and clear
related running time.
2) Contact the agent or Inovance for
technical support.
Err91
Stop for motor
lubricating grease
maintenance
Lubricating grease applying
time - Lubricating grease
maintenance period ≥ Long-
time stop pre-warning time
1) Maintain the equipment and clear
related running time.
2) Contact the agent or Inovance for
technical support.
Err92
Stop for lubricating
oil maintenance
Lubricating oil applying time
- Lubricating oil maintenance
period ≥ Long-time stop
pre-warning time
1) Maintain the equipment and clear
related running time.
2) Contact the agent or Inovance for
technical support.
Err93
Stop after pressure
pre-warning time
exceeded
Duration from the pressure
pre-warning reported ≥
Long-time stop pre-warning
time
See the solutions for A70/71.
