When configuring modular combinations (multiplexing outdoor units), a dedicated oil balance pipe (Ø 6.4 mm) must interconnect the outdoor modules to dynamically balance compressor crankcase oil levels. 3. Wiring and Control Board Configurations Power Supply Wiring
Up to 9 or 13 units (depending on diversity factor and specific indoor model limits) Pre-Installation & Clearance Requirements
The is a 14HP (nominal) VRF outdoor unit from Toshiba's Super Heat Recovery Multi-e (SHRM-e) series. This 3-pipe system is designed for high-efficiency simultaneous cooling and heating. Technical Specifications & Service Manual Overview
Find if you have a particular electrical issue. Locate specific piping requirements .
The for the Toshiba MMY-MAP1404FT8E (part of the SMMS-i VRF outdoor unit series) provides critical technical data for maintenance, troubleshooting, and repair. Manual Access & Identification
Connect the 3-phase power supply to the L1, L2, L3, and N terminals.
Use a non-acidic coil cleaner and low-pressure water. Bent fins should be straightened using a fin comb to ensure optimal airflow. Troubleshooting the Inverter System
The service manual for this series (often documented under the or SMMS-i engineering data) includes:
While logged at the outdoor unit, this indicates an indoor condensate management failure forcing a system-wide safety shutdown.
Live readouts from the high-pressure sensor (Pd) and low-pressure sensor (Ps).
Tracks the exact pulse position (0 to 500 pulses) of the expansion valves.
Check terminal torque specs. Look for thermal discoloration on contactors and inverter boards. Insulation Resistance
Diagnostic procedures for identifying system faults and sensor errors.
: A 369-page technical guide for maintenance and troubleshooting.. The primary model is MMY-MAP1404HT8 with file number SVM-13024-3 . It contains crucial technical details like wiring diagrams, refrigerant cycle information, PCB layouts, and troubleshooting tables.
The service manual for this unit serves as a comprehensive technical guide for qualified service personnel. It covers essential diagnostics, maintenance procedures, and system configurations. en.toshiba-aircon.gr Installation Manual - Toshiba Air-Conditioning
If you are currently troubleshooting a specific system fault on your , please share the exact error code or symptom you are observing. I can provide the precise pin-out measurements, sensor resistance charts, or step-by-step diagnostic paths directly from the service parameters. Share public link
| Parameter | Specification | | :--- | :--- | | | 3-Phase, 380-415V, 50Hz | | Cooling Capacity | 40.0 kW | | Heating Capacity | 45.0 kW | | Compressor Type | Twin Rotary (Inverter Driven) | | Refrigerant Control | Electronic Expansion Valve (Main) + LEV | | Sound Pressure Level | Approx. 58 dB(A) | | Dimensions (WxHxD) | 1340 x 1650 x 800 mm (approx) | | Weight | Approx. 240 kg | | Max. Connectable Indoor Units | Up to 20 units (Check specific combination ratio) | | Pipe Connections | Gas: Ø25.4mm (1 inch) / Liquid: Ø12.7mm (1/2 inch) |
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