Report this forum post

hl GlenMc,
first thing i would do is make sure the battery is in good charge state.
no bad cells etc. cells have the correct level of fluid in them. Once verified then start troubleshooting. A lot of the time when you get a slurry of faults like that a bad battery can cause it or be the cause of a component failure triggering them.

Now as for the codes...
-Fault 33 indicates Field driver fault P - Fault signal from the driver board. This is indicating some fault in the driver board for the pump circuit.
-Fault 13 indicates IGBT driver fault R - Fault signal from the drive board. This is indicating some fault in the drive board for the drive circuit.
-Fault 11 indicates IGBT breaking R - Checks voltage and current of power circuit.
-Fault 21 indicates IGBT breaking L - Checks voltage and current of power circuit.
-Fault 30 indicates Armature fault P - Checks voltage and current of power circuit.
-Fault 33 indicates Field driver fault P - Fault signal from the driver board.

Like i said, check the battery voltage (under load) and see what's going on with the battery.
Other than that you may have some burned diodes on the drive board(s) and possibly some other issues. The only cause i can think of that would cause such issues in both systems is a bad battery.
If you will report back here with your findings on the battery. i know you gave a preliminary on being above 36v but what does it do under load?
total voltage before use after charge, volts per cell before testing. voltage drop during hydraulic motor load. I have a feeling you have a battery issue. It could be a bad drive or H-bridge board but lets start with the battery.
  • Posted 24 Dec 2021 00:28
  • Modified 24 Dec 2021 00:36 by poster
  • By swoop223
  • joined 23 Mar'12 - 3,692 messages
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com

This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.

Indicates mandatory field
Movers & Shakers
Rob Ott Rob Ott
Executive vice president and chief commercial officer, East Penn Manufacturing
President, Logistics UK
Director of dealer development East Coast, Big Joe Forklifts
Vice president, customer, TVH Americas

PREMIUM business

Hangzhou Manforce Material Handling Equipment Co., Ltd
Specializing in Nichi and conventional forklift products, we create significant value for all our partners!
Movers & Shakers
Rob Ott Rob Ott
Executive vice president and chief commercial officer, East Penn Manufacturing
President, Logistics UK
Director of dealer development East Coast, Big Joe Forklifts
Vice president, customer, TVH Americas
Latest job alerts …
Philadelphia, United States
Dayton OH/Cincinnati OH, United States
Prospect CT, United States
Upcoming in the editorial calendar
MANAGING MIXED FLEETS
Oct 2025
ASSET FINANCE
Nov 2025