Haulotte HA26 RTJ O, HA26 RTJ PRO (HA80 RTJ)
Haulotte error code F04.05 — Boom YV520/YV520U/
Message on the display: Boom YV520/YV520U/
Code F04.05 occurs in machines: Haulotte HA26 RTJ O, HA26 RTJ O SW, HA26 RTJ PRO, HA26 RTJ PRO SW.
blocking fault
[case 1] Proportional output's failure : Boom movement speed [case 2] Digital output's failure : Upwards boom movement [case 4] Digital output's failure : Downwards boom movement [case 8] Digital output's failure : Safety boom descent movement Normal state of YV802 output when boom control is neutral is "open-circuit" Normal state of YV802 output when boom control is neutral is "OK" When state is different from these defined states, YV802 output is seen as failing ; The failure is then acknowledged when state is "Open-circuit" with neutral set point and neutral control [case 16] Digital output's failure : Safety ground boom movement Normal state of GND6 output when boom control is neutral is "open-circuit" Normal state of GND6 output when boom control is neutral is "OK" When state is different from these defined states, GND6 output is seen as failing ; The failure is then acknowledged when state is "Open-circuit" with neutral set point and neutral control
Description from the Haulotte service manual, in the original wording.
Effect on the machine: --> YV520 = FAIL --> YV520U=FAIL --> YV520D=FAIL --> YV802=FAIL --> GND6=FAIL
Possible causes
The manual does not list the causes for this code: the service technician establishes them during diagnosis of the machine.
What you can do
Switch the machine off with the emergency stop and switch it on again. If the code comes back, do not use the machine and call service.
What service does
A qualified service technician reads the code with the manufacturer's diagnostic tools, finds the cause, clears the code and carries out a function test.
Source: Haulotte Maintenance Book HA26 RTJ (4001055180), fault codes chapter.
The descriptions are quoted from the manufacturer's service documentation and are for guidance only. Clearing codes, calibrations and repairs are carried out by a qualified service technician according to the manual for the specific serial number. A machine with an active blocking code must not be used until the cause has been removed.
Does code F04.05 not go away?
RK Rental services Haulotte lifts at our workshop or on site at the customer's premises (construction site, factory, warehouse). We read the code, remove the cause and select the parts by serial number.
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