Troubleshooting
PROBLEM / CONDITION
CAUSE
SOLUTION
GPU does not turn
ON
Volt/Amp meter
OFF*
Status indicator
OFF
No AC input to GPU.
Verify power cord connections.
Check AC input fuse. If blown, replace
(only once). 1 extra fuse is contained in
the fuse drawer.
If fuse blows a second
time, do not replace until GPU is
repaired
. See Limited Warranty
statement for technical service contact
information.
GPU displays voltage but no output
to aircraft (zero amps)
Status indicator
GREEN
Faulty connection between
GPU and aircraft electrical
system.
Check connections from GPU to the
aircraft’s external power receptacle.
Volt/amp meter
OFF
*
Status indicator
FLASHING GREEN
Auto-shutdown timer
expired.
Cycle power switch OFF, then back ON,
to restart shutdown timer.
Adjust timer settings if desired, or zero to
disable shutdown timer.
Status indicator
FLASHING RED
Voltage drops to < 13/26 volts
Current overload.
Reduce load to less than 35/27 amps.
Status indicator
FLASHING RED
Volt/Amp meter
OFF
Internal protection engaged.
Over temperature, or
Sustained overload.
Reduce load to less than 35/27 amps.
Turn off aircraft equipment to reduce
current draw.
Cycle Power Switch OFF then ON again
to reset.
Status indicator
FLASHING RED
GPU displays voltage but no output
to aircraft (zero amps)
Internal protection engaged.
If cable connections are good, then turn
power switch OFF.
Disconnect DC output cord from aircraft
external power receptacle. Wait for GPU
meter to go OFF.
Power switch ON. Meter ON.
Reconnect to aircraft.
* If there is battery voltage back feeding to the GPU from the aircraft, the voltmeter will display that condition, which may trigger the
GPU into protection mode and not turn back on if power is interrupted. Follow instructions above for disconnecting from the
aircraft and resetting the GPU to restore proper operation.
SPECIFICATIONS
M1435
/
M1435P
M2827
Input Voltage
90-240 volts AC, 50-60 Hz
90-240 volts AC, 50-60 Hz
Input Current
5.3A @ 115 volts AC
8.2A @ 115 volts AC
Input Fuse
8A Littelfuse 617 Series P/N
0617008.MXP
10A Littelfuse 617 Series
P/N 0617010.MXP
Output
14.25 +/- 0.25 VDC, 35 amps max
28.50 +/- 0.25 VDC, 27 amps max
Output Cable
8 AWG, SB-50 to 3-pin oval AN2551
(single-pin Piper plug for M1435P)
8 AWG, SB-50 to 3-pin oval AN2551
Chassis Dimensions
4.13” H x 5.32” W x 13.4” L
4.13” H x 5.32” W x 13.4” L
Carry Weight w/cables 10.9 lbs
11.2 lbs
Carton Dimensions
6” H x 10” x 16” L
6” H x 10” x 16” L
Shipping Weight
12 lbs
12 lbs
5
M-Series Mini-GPU Manual P/N 752-697, Rev 20211201
