Daikin 4MXS36NMVJU Service Manual

SiUS121630EA Silicone Grease on Power Transistor/Diode Bridge
Trial Operation and Field Settings 227
6. Silicone Grease on Power Transistor/Diode Bridge
Outline Apply the specified silicone grease to the heat radiation part of a power transistor/diode bridge
when you replace an outdoor unit PCB. The silicone grease encourages the heat radiation of a
power transistor/diode bridge.
Details 1. Wipe off the old silicone grease completely.
2. Apply the silicone grease evenly. See the illustrations below for examples of application.
3. Tighten the screws of the power transistor/diode bridge.
4. Make sure that the heat radiation parts are firmly contacted to the radiation fin.
Note: Smoke emission may be caused by bad heat radiation when the silicone grease is not
appropriately applied.

OK: Evenly applied

NG: Not evenly applied

NG: Foreign matter is stuck.
(R22541)
Power transistor
(or diode bridge)
Silicone grease
Radiation
fin
PCB
(R21866)
Foreign matter
(R21867)

Daikin 4MXS36NMVJU Specifications

General

Model	4MXS36NMVJU
Category	Air Conditioner
Heating Seasonal Performance Factor (HSPF)	4.0
Number of Connectable Indoor Units	4
Seasonal Energy Efficiency Ratio (SEER)	6.0
Refrigerant	R32
Indoor Units Compatibility	Compatible with various indoor units
Indoor Unit Dimensions (HxWxD)	Varies by model
Indoor Unit Weight	Varies depending on the connected indoor unit model
Operating Temperature (Cooling)	-10 to 46 °C
Operating Temperature (Heating)	-15 to 24 °C
Type	Multi-Split System