Shinco Service Manual

4.9 Refrigerant charge mode

Entry condition

Press the emergency switch over 5 seconds, there will be three “DU” sound in the indoor unit, and start the unit with the remote controller.

Actions

1.On cooling mode, the indoor fan speed is low the frequency is fixed on F6,

2.Cancel the mode

Turn off the air conditioner with remote controller

5. Protection

5.1 Compressor protection

5.1.1 High pipe discharge temperature protection

When discharge pipe temperature is higher than T3, the compressor frequency will be lowered, when discharge pipe temperature lower to T1, the frequency will rise, and the frequency will be limited one class than former one. When the discharge pipe temperature lower to T2 and keep for 10 minutes, the frequency will return to former one.

When discharge pipe temperature is higher than T4, the compressor stop and the outdoor motor stop 15s later. When discharge pipe temperature lower to T1 and the unit restart after 3 minutes.

 

T1

T2

T3

T4

 

 

 

 

 

KFR-25GWZ/BM

 

 

 

 

 

 

 

 

 

KFR-35GWZ/BM

 

 

 

 

 

90

95

105

110

KFR-50GWZ/BM

 

 

 

 

 

 

 

 

 

KFR-70GWZ/BM

 

 

 

 

 

 

 

 

 

5.1.2 Sensor protection

There is thermal sensor on compressor, and the compressor will stop when the temperature is too high, and the outdoor motor will stop 15s later. When the temperature return normal value, the compressor will restart 3 minutes later.

5.1.3 Compressor relay start protection

The compressor will restart 3 minutes after stop.

5.2 Current protection

When outdoor current is higher than I1, the compressor frequency will be limited and prohibited to rise. When the current is higher than I2, and the compressor frequency will lower until the current is lower than I1.

When outdoor current is lower than I3, the compressor will stop.

The detailed current value see below table:

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Shinco KFR-25GWZ BM service manual Protection, Refrigerant charge mode

KFR-25GWZ BM, KFR-25GWZ, BM specifications

The Shinco BM and KFR-25GWZ series represent a significant advancement in air conditioning technology, combining efficiency, performance, and user-centric features. Designed for both residential and small commercial applications, these models aim to provide optimal comfort while minimizing energy consumption.

One of the standout features of the Shinco BM series is its impressive energy efficiency rating, which helps to reduce electricity bills while still delivering powerful cooling and heating performance. The models are equipped with advanced inverter technology that allows for variable speed operation. This means that rather than cycling on and off entirely, the compressor adjusts its speed according to the required cooling or heating load. This not only results in a more consistent temperature but also extends the lifespan of the unit.

The KFR-25GWZ model integrates a multi-stage filtration system that ensures cleaner air quality. This system effectively captures dust, allergens, and other airborne particles, promoting a healthier indoor environment. Additionally, these units often feature a self-cleaning function which helps maintain the cleanliness of the internal components, enhancing efficiency and longevity.

User-friendly interfaces are another hallmark of the Shinco series. The remote control and optional Wi-Fi connectivity allow users to monitor and adjust settings from their smartphones or tablets. Features like programmable timers, sleep modes, and multiple fan speeds further enhance convenience.

In terms of design, the KFR-25GWZ is both sleek and modern, making it a perfect fit for various interior aesthetics. Its compact design ensures that it can be installed in a range of spaces without being obtrusive.

The noise levels of both the BM and KFR-25GWZ units are impressively low, making them suitable for bedrooms, offices, and other areas where quiet operation is essential. Enhanced insulation within the units minimizes sound, allowing users to enjoy their space without distraction.

Safety features including automatic restart after a power outage and overcurrent protection make these air conditioners reliable choices for households and businesses alike. Additionally, the environmentally friendly refrigerants used in these models contribute to lower global warming potential, aligning with contemporary sustainability goals.

In conclusion, the Shinco BM and KFR-25GWZ series showcase a blend of innovative technology, energy efficiency, and user-friendly features, making them an excellent choice for those looking to enhance their indoor comfort in a sustainable way.