Fujitsu General / Daitsu 313616060401 Thermostat (Saginomiya YTB-B166)

Product Overview

The Daitsu 313616060401 thermostat (Fujitsu General / Daitsu part number) is an OEM replacement thermostat for air conditioning systems, identified as a Saginomiya YTB-B166 room thermostat. Saginomiya is a leading manufacturer of thermostats and controls for the HVAC industry, supplying OEM components to major air conditioner brands.

This thermostat is the original equipment part used in Fujitsu General and Daitsu air conditioning units, providing temperature sensing and control for room air conditioners. Replacing a faulty thermostat with the OEM part restores correct temperature control and reliable operation of the unit.

Key Features

• OEM part number 313616060401 for Fujitsu General / Daitsu AC units
• Identified as Saginomiya YTB-B166 room thermostat
• Direct replacement for the original thermostat in the air conditioner
• Accurate temperature sensing and control
• OEM quality and compatibility
• Simple installation by qualified technicians
• Restores correct cooling and heating cycle operation

Technical Specifications

Applications

This thermostat is used as a replacement part in Fujitsu General and Daitsu residential and commercial air conditioning systems, including wall-mounted split units and cassette units where the original thermostat has failed or is being replaced during maintenance.

Ordering and Selection

When ordering the Fujitsu General / Daitsu thermostat, confirm the air conditioner model and the original part number, because the OEM thermostat must match the specific air conditioner series. The part number 313616060401 identifies a Saginomiya YTB-B166 room thermostat used in Fujitsu General and Daitsu units, and the correct thermostat ensures accurate temperature control. Our team can help you confirm that the 313616060401 thermostat you select is correct for your air conditioner model. Each thermostat supplied by Seven Star LLC is a OEM component.

Maintenance and Support

Replacing a faulty thermostat restores correct cooling and heating cycles to the air conditioner, and installation should be performed by a qualified technician. Genuine thermostats and other AC spare parts are available through Seven Star LLC. Contact our team for assistance with the thermostat for your Fujitsu General or Daitsu unit, and we will confirm availability.

Industry Applications and Custom Support

The Fujitsu General / Daitsu thermostat is trusted by HVAC service teams across commercial and residential buildings in Oman, the GCC and the wider Middle East region. Our customers select the 313616060401 thermostat for reliability, genuine quality and dependable supply. Seven Star LLC provides custom support including technical selection, quotation and after-sales assistance, and we regularly supply this thermostat as part of preventive maintenance programs and service contracts. Whether you need a single unit or a complete set for a project, our team supports procurement and inspection.

The thermostat controls the room temperature of the air conditioner, and the unit with the Saginomiya YTB-B166 capillary sensor provides the on/off control for the Fujitsu General and the Daitsu systems.

The thermostat set point is adjusted on the front dial, and the capillary sensor is mounted at the evaporator inlet of the air handling unit.

The Saginomiya thermostat is used for the temperature control of the fan coil units and the package air conditioners, and the capillary sensor detects the return air temperature.

The switching differential of the thermostat is matched to the compressor control of the unit.

The Fujitsu General Daitsu thermostat 313616060401 is the exchange thermostat of the air conditioning unit, and the Fujitsu General Daitsu thermostat 313616060401 with the capillary sensor covers the original control function of the AC system.

The 313616060401 thermostat is also used for the fan coil units, and the thermostat 313616060401 is supplied with the mounting bracket of the original unit.

The Fujitsu General Daitsu thermostat 313616060401 and the 313616060401 capillary are matched to the evaporator coil.

Why Seven Star LLC?

Seven Star LLC supplies genuine HVAC OEM spare parts to customers in Oman and the GCC. We verify part numbers against manufacturer data, ensuring you receive the correct thermostat for your air conditioner.

Our engineers help you verify the exact model and revision before ordering, avoiding costly mismatches.

Request a Quote for Fujitsu General / Daitsu 313616060401 Thermostat (Saginomiya YTB-B166)

For the 313616060401 or any related control and instrumentation requirement, contact the Seven Star LLC team. Submit a formal inquiry through our RFQ page with your configuration and application details, and our specialists will respond with a detailed commercial proposal and the official 313616060401 documentation.

Identifying the Correct Replacement Thermostat

OEM thermostats look very similar across air conditioner series, and a part that fits physically may still have the wrong set-point range or capillary length. Before ordering, collect the following from the failed part and the unit:

• Unit rating plate – the full indoor and outdoor model numbers of the Fujitsu General or Daitsu unit, not only the brand.
• Thermostat label – the OEM number 313616060401 and the Saginomiya type marking (YTB-B166). If the label is worn, a clear photo of the body, dial shaft and terminals helps us compare.
• Capillary and sensing bulb – note the length and how the bulb is fixed, since the replacement must reach the same sensing position.
• Wiring – photograph the terminal connections before removal, so the new thermostat is wired exactly as the original.

Installation Tips

Isolate the unit electrically before opening the control box. Route the new capillary along the original path without sharp bends or kinks, because a crushed capillary changes the sensing response or loses its charge. Secure the bulb firmly in its clip or pocket, with good thermal contact, then refit the dial and the knob so the scale matches the original position. After power-up, run the unit through a full cycle and confirm that the compressor cuts out and restarts at sensible room temperatures.

Troubleshooting Before You Replace

Not every temperature complaint is a failed thermostat. Check these first:

• Compressor never stops – confirm the bulb has not come loose from its clip, and check for low refrigerant charge or a dirty filter that stops the room from reaching set point.
• Short cycling – a bulb sitting in the direct airflow of the coil, or a restricted air path, can make the thermostat switch too often.
• No cooling at any setting – check continuity across the thermostat contacts with the dial at its coldest position, and check the supply before you condemn the part.
• Dial feels loose or turns without effect – a mechanical fault that normally means replacement.

Service Conditions in Oman and the GCC

In the Gulf, air conditioners run for most of the year at high ambient temperatures, and many older Fujitsu General and Daitsu units in villas, offices and staff accommodation are kept in service with OEM spares. Dust and long running hours shorten the life of mechanical controls, so service contractors often keep a small stock of thermostats for routine preventive maintenance.

Sourcing from Seven Star LLC

Send the unit model, the part number and a photo of the old thermostat. We confirm the match and quote the lead time for single units or project quantities.

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