HELP with Alarm list of mitsubishi track unit undermound

[tspgr]

Hello to all.
A customer of mine bought a used truck thet has a mitsubishi undermound unit has anyone any alarm list for them ????

Thanks in advance
Papadimitropoulow Mixalis

[tspgr]

good morning the unit type is TU73D25-CN4 and the alarm code is E 87 E 50 E 73 I alsow see that the temp reading in the display is faulse .....