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9.0 DIAGNOSTICS & TROUBLESHOOTING
9.4 Active Protection Fault Details (cont.)
Diagnostics
IMPORTANT:
This mode of active
protection must be manually reset.
L16 – Com/DSP Comm Fault – A920_O Inverter
Fault
If the inverter identifies a communication with the
DSP (digital signal processor), the inverter will
automatically shut the compressor off and keep it
from operation. If this fault occurs 3 times during
one call for operation the VSODC will lock out the
compressor to keep it from continuing to operate and
flash an ”L” on the dual 7-segment LEDs followed by
a 16
IMPORTANT:
This mode of active
protection must be manually reset.
L16 – PFC Temperature Sensor Open – A921_O
Inverter Fault
If the inverter identifies an open power factor
correction (PFC) temperature thermistor the inverter
will automatically shut the compressor off and keep
it from operation. The VSODC will lock out the
compressor to keep it from continuing to operate and
flash an ”L” on the dual 7-segment LEDs followed by
a 16.
IMPORTANT:
This mode of active
protection must be manually reset.
L16 – Discharge Line Temperature Fault – A927_O
Inverter Fault
If the inverter identifies a fau
lty discharge line
temperature thermistor the inverter will automatically
shut the compressor off and keep it from operation.
The
VSODC will lock out the compressor to keep it
from continuing to operate and flash an ”L” on the
dual 7-segment LEDs followed by a 16.
IMPORTANT:
This mode of active
protection must be automatic reset once the
discharge line thermistor fault is corrected.
L16 – Discharge Temperature – T916_O Inverter
Fault
If the VSODC detects the compressor discharge
temperature is greater 235°F [113ºC] the VSODC will
automatically begin to slow the compressor operation
until the temperature is
≤
200°F [93ºC]. If this fold
back is not successful in bringing the compressor
discharge temperature below 200°F prior to reaching
the minimum compressor speed then the compressor
will be kept from operating. After the compressor
off delay is complete the VSODC will return the
compressor to operation. If this fault occurs 3 times
during one call for operation the VSODC will lock
out the compressor to keep it from continuing to
operate and flash an “L” on the dual 7-segment LEDs
followed by a 16.
IMPORTANT:
This mode of active
protection must be manually reset.
L16 – Communication Failure – A929_O Inverter
Fault
If the inverter identifies a communication error with
the VSODC, the inverter will automatically shut the
compressor off and keep it from operation. When this
fault occurs the VSODC will lock out the compressor
to keep it from operating and flash an ”L” on the dual
7-segment LEDs followed by a 16.
IMPORTANT:
This mode of active
protection must be manually reset.
