- Aircraft configuration prior to reset:
On ground with engines running.
Circuit breakers to reset:N34
Normal PTU reset1st) Yellow electric pump “ON”, wait 2 seconds.Turn yellow electric pump “OFF”
2nd) Set brakes, both engine pumps “OFF” yellow electric pumps “ON” , PTU pushbutton “OFF” then to “AUTO” ,yellow electric pumps “OFF”, engine pumps “ON”.
PTU reset cause by cargo door operation:Reset with engines running.
1) Reset message using master caution P/B switch.
2) Select hydaulic page on ECAM.
3) Select yellow hydraulic electric pump "ON" then "OFF".
4) Wait minimum of 30 seconds.
5) Cycle the PTU switch "ON"-"OFF"-"ON".
6) Select engine #1 green hydraulic pump "OFF", PTU should operate yellow to green.
7) Select engine #1 green hydraulic pump "ON".
8) Select engine #2 yellow hydraulic pump "OFF", PTU should operate green to yellow.
9) Select engine #2 yellow hydraulic pump "ON".
10) ECAM should be normal.
Results of power up test or reset:Pass: Fault clears.
Fail: Fault remains.
Notes:PTU fault can be caused by cargo door operation 30 seconds after 2nd engine start.
Sign off:TSM29-23-00-810-801
Applicable deferrals:MEL29-23-01=Power Transfer Unit.
320 Resets