Description
Otis Elevator motherboard GECB_EN GAA26800LC1/2 Brief introduction
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Product Name |
Otis Elevator motherboard GECB_EN |
| Model Number |
GAA26800LC1 GAA26800LC2 GBA26800LC1 GBA26800LC2 GEA26800LJ2 |
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Quality
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Original.Brand New
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Payment
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T/T. Paypal. Western Union
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Delivery
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3-5 Working Days
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Packaging
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Packed by carton
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Otis Motherboard GECB_EN GAA26800LC1/2 – Setup, Upgrade & Replacement Guide
Nanjing Zhuye Elevator Parts – OEM stock, global shipping, 24/7 support
Nanjing Zhuye Elevator Parts – OEM stock, global shipping, 24/7 support
The GAA26800LC1/2 (marketed as “GECB-EN”) is the main 32-bit motherboard behind every Otis Gen2®, SkyRise® and HydroLift® installation delivered since 2014. Mounted in the controller cabinet, this PCB hosts the 400 MHz Power-PC that executes the SIL-3 safety task, manages real-time CAN traffic, stores 90 days of fault logs and still has spare Ethernet for Otis REM remote monitoring. When the green STATUS LED turns red, cars go straight to Phase-II recall and tenants start calling the fire brigade. Nanjing Zhuye Elevator Parts keeps hundreds of pre-flashed GAA26800LC1/2 boards in Rotterdam and Nanjing so you can restore full operation the same shift. Below is an 800-word field manual that explains correct usage, firmware upgrade paths and the replacement cycle that keeps your elevators secure, connected and code-compliant.
1. What the GAA26800LC1/2 does
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400 MHz Power-PC 5200 with dual CAN, RS-485 and 10/100 Ethernet PHY
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512 MB NAND flash for event logs, 64 MB DDR for real-time tasks
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Dual-redundant safety CPU (external via SPA) achieving SIL-3 / PLe Cat. 3
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Battery-backed RTC and 256-bit AES encryption for REM cloud link
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UL/CE listed to EN 81-20/50 and CSA B44.1 for 15-year design life
2. Tools to carry
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GAA26800LC1/2 motherboard (Nanjing Zhuye part #OT-GECB-EN-LC2) in anti-static bag
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2 mm & 2.5 mm flat screwdrivers, TX10 Torx
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Otis Service Tool (OST) laptop with GECB 7.x licence key
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RJ-45 and USB-to-CAN adapters (shielded)
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Multi-meter with min/max capture
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Lock-out / tag-out kit
3. Installation – 30 minutes if you back-up first
Safety: place all cars on inspection, open the main disconnect and verify 0 V on the 24 Vdc rail.
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Photograph every J-number jumper – especially J8 (safety version) and J15 (REM enable).
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Remove six TX10 screws; slide the old board out of the card guides.
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Transfer the micro-SD card (firmware + car parameter file) and the CR2032 battery.
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Insert the new GAA26800LC1/2; torque screws to 1.0 N·m.
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Re-connect flat cables J1 (power), J2 (CAN-A), J3 (CAN-B), J4 (SPA), J7 (Ethernet).
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Apply power – STATUS LED blinks green 3 times then solid; ETH LED flashes amber during DHCP.
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Launch OST → Controller → Parameter Upload; select the XML back-up created earlier.
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Run SIL-3 safety verification – must show 100 % pass.
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Remove inspection, run 5 full-speed cycles and log the serial number in CMMS.
4. Functional test – prove it to the inspector
a) Safety string continuity: <0.1 Ω across XSA1-XSA2.
b) CAN-A/B error frames: <1 % during 30 min run.
c) Ethernet ping to REM gateway: <50 ms, 0 % loss.
d) Battery voltage: 3.0 V ±0.1 V; low-battery LED off.
e) Export OST report and attach PDF to site file.
b) CAN-A/B error frames: <1 % during 30 min run.
c) Ethernet ping to REM gateway: <50 ms, 0 % loss.
d) Battery voltage: 3.0 V ±0.1 V; low-battery LED off.
e) Export OST report and attach PDF to site file.
5. Preventive maintenance schedule
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Monthly – visual sweep for swollen capacitors or corroded CAN terminals.
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Quarterly – measure 24 Vdc ripple (<100 mV) and case temperature (<55 °C).
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Annually – export fault log; clear buffers after review.
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Every two years – replace CR2032 battery and apply latest cybersecurity patch via OST.
6. Replacement cycle – firmware & environment decide
Otis baseline: 15 years. Nanjing Zhuye field data refine this:
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Light duty (<150 starts/day, HVAC room): 18 years
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Standard duty (150–400 starts, residential): 15 years
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Heavy duty (>400 starts, hospital, mall): 12 years
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High ambient (>45 °C, rooftop cabinet): 10 years – capacitor life halves every 10 °C rise.
Replace immediately if:
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STATUS LED red double-blink – safety CPU handshake failure
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Ethernet port unresponsive – lightning-damaged PHY
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RTC loses time <24 h – battery leakage corroding pads
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Fault buffer shows “NVRAM error” – flash wear-out after 100 k writes
7. Eco-disposal & warranty
Return the old board in the prepaid anti-static box; Nanjing Zhuye recovers gold, copper and aluminium and issues a €15 recycling credit. Every GAA26800LC1/2 ships with a 24-month replacement warranty, extendable to 60 months when you join our annual battery-and-patch program.
8. Why buy from Nanjing Zhuye Elevator Parts
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450 units in stock, Rotterdam & Nanjing, flashed with latest cybersecurity firmware
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Factory-sealed Otis packaging with hologram and serial database – no grey-market clones
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QR code on box links to parameter template and 5-minute swap video
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24/7 technical hotline staffed by ex-Otis commissioning engineers
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Bundle pricing: buy 5 boards and get a free CR2032 battery kit plus freight credit
9. Bottom line
A red-status motherboard is the fastest way to a building-wide shutdown. Keep a genuine, pre-flashed GAA26800LC1/2 on every truck, swap it in 30 minutes, and your elevators will stay safe, connected and compliant for the full 15-year design cycle. Order today from Nanjing Zhuye Elevator Parts – the fastest route from “fault code” to “perfect ride.”
