Otis Elevator server operator blue TT debugger GAA21750AK3 elevator test tool
Product Display
Specifications
Applicable system
1. Otis OH5000/OH5100 LCB2/RCB2/ALMCB, etc. (Con5403&CON4423 systems using Xiwei inverters require an adapter to enter the inverter mainboard). Some MCS systems of OH5000 or OH5100 before 2008 may not Compatible, need to use black shell Chinese server
2. The HAMCB and ALMCB systems used in Hangzhou Xiao, Xizi and Sujie elevators produced before 2015. It is not applicable to other systems
Note
The converter head can only be used with English servers. The function of the converter head is to allow the English server to debug the AVO series SV inverter after being plugged in. It has no other functions.
The English server is suitable for Xizi Otis debugging. The Chinese server is suitable for debugging Hangzhou Sio, Sujie and Unaid. If it is used for Xizi Otis, it can only check some trapezoidal faults and cannot debug.
If the motherboard has a password, you need to use a decoder (not the product of this link) or other methods to decrypt it first. After decrypting it, you can use this link server for debugging.
FAQS
The GAA21750AK3 is a professional handheld diagnostic and programming tool designed for OTIS and Xizi OTIS elevator and escalator systems. It is used for commissioning, troubleshooting, parameter configuration, system monitoring, and maintenance.
The GAA21750AK3 supports numerous OTIS platforms, including Gen2, ACD1–ACD5, SkyRise, OH1000, OH5000, OTIS 2000, OTIS 3000, and various OTIS escalator control systems. Compatibility should always be verified according to the controller model.
It supports a wide range of OTIS control boards, including GECB, LCB II, ALMCB, TCBC, TCEC, RCB2, and GDCB, as well as compatible door controllers and inverter systems.
Compared with the older GAA21750S2 Black Service Tool, the GAA21750AK3 Blue Service Tool provides enhanced diagnostic functions, broader controller compatibility, deeper parameter access, and improved maintenance capabilities.
Yes. The built-in Event function allows technicians to read historical fault records, view active error codes, and analyze system events for faster troubleshooting.
Yes. Depending on the connected controller and access level, the GAA21750AK3 can be used to configure system parameters, perform commissioning, monitor operating status, and execute maintenance functions
Yes. It is compatible with several OTIS door operator systems, including DCSS4, DCSS5, DO3000, and Easy-Con, as well as inverter series such as SIEI, AVY, AVO, AVS, OVF20, and OVF30.
Yes. We offer professional technical support before and after purchase, and we ship OTIS service tools and elevator spare parts worldwide via international express, air freight, or sea freight according to customer requirements.
