8-4-2. Inspection Points for Each Part

(1) Outdoor control circuit board

Refer to 8-3-1. Checking the outdoor unit.

NOTE Do not remove or insert the outdoor control circuit board connector when power is being supplied to it. (The controller will be damaged.)

(2) Fuse

Check it visually or the continuity with a tester.

(3) Compressor

Check for an open circuit in the compressor coil winding.

(4)Compressor protective sensor (compressor discharge temperature thermistor) Check that the senseor is securely contained in the thermostart holder.

(5)4-way valve

Short-circuit the T-RUN terminal to the COM terminal of TEST/T-RUN terminals. Perfrom a test run of the unit alone, and check whether the 4-way valve inside the outdoor unit produces a click sound.

(6) Coil thermistor

Check that the sensor is securely contained in the thermostat holder.

(7) Electric expansion valve

When replacing the electric expansion valve and coil, be sure to attach the connectors in the correct positions. Labels are applied to the valve body and coil, corresponding to the connector colors, to identify them.

Controller check

 

 

 

 

No voltage on circuit board

Voltage varies

Use a multi-meter to measure the voltage (12 V).

When the power is turned ON, the needle will move in the following seguence in approximately 10 to 20 seconds for each point.

Model No.

 

 

Sequence

SAP-CMRV1426EH

MV0

 

MV1

 

 

 

 

SAP-CMRV1926EH

 

 

 

 

 

 

 

 

 

 

 

 

SAP-CMRV1936EH

MV0

 

MV1

 

MV2

 

 

SAP-CMRV2446EH

MV0

 

MV1

 

MV2

 

MV3

SAP-CMRV3146EH

 

 

 

 

 

 

 

 

 

 

Check the illumination of the red Power Lamp.

Replace the controller.

NOTE

Cool the main unit with a damp cloth or other means while welding. When applying vacuum, use the special service magnet and rotate at least 5 revolutions counterclockwise to fully open the electric expansion valve.

Check the coil resistance.

 

 

Check the resistance between the gray lead

 

 

 

 

 

 

 

 

wire and the other wires.

 

 

 

 

 

 

0 ohm

Approx. 46 +/– 4 ohm

Resistance is OK if it is 46 +/– 4ohm at 20 °C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*1

 

 

 

 

 

Replace the coil.

 

 

 

 

 

Use the special service magnet and

 

 

Open and close the

 

 

 

 

 

 

 

 

 

 

 

 

 

rotate 5 revolutions clockwise to fully

 

 

 

 

 

 

electric expansion valve

 

 

 

 

 

 

 

 

 

 

 

 

 

 

close the valve.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

by hand to check it.

 

 

 

 

 

 

 

 

 

 

 

 

 

Then start the unit and measure the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No temperature change

 

 

Temperature changes

temperature at the inlet and outlet

 

 

 

 

 

tubes of the electric expansion valve.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

If the temperature difference is large,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

the valve is closed.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Then rotate 5 revolutions

 

 

 

Replace the electric

 

 

This part is normal.

 

 

 

 

 

 

 

counterclockwise to open the valve.

 

 

 

expansion valve.

 

 

Check elsewhere.

 

 

 

 

 

 

 

Operation is normal if the temperature

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

difference between the 2 tubes drops.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*1 If you have manually checked the electric expansion valve, be sure to reapply the outdoor power after you have replaced the wiring. (The position of the elecric expansion valve will changed.)

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Sanyo SAP-CMRV1926EH, SAP-CMRV1426EH-F service manual Inspection Points for Each Part

SAP-CMRV1926EH, SAP-CMRV1426EH-F specifications

The Sanyo SAP-CMRV1926EH and SAP-CMRV1426EH-F stand out in the realm of advanced climate control solutions. As part of Sanyo's renowned lineup of air conditioning systems, these models are designed to offer superior performance, energy efficiency, and enhanced comfort, catering to both residential and commercial use.

One of the main features of the SAP-CMRV1926EH is its robust cooling and heating capacity, making it an ideal choice for larger spaces or those requiring rapid temperature adjustments. The model boasts a cooling capacity of up to 19kW, while the SAP-CMRV1426EH-F offers a more compact 14kW, making it suitable for smaller environments without compromising performance. This flexibility allows users to select a model that best fits their specific needs.

Both models incorporate advanced inverter technology, which significantly enhances their energy efficiency. By adjusting the compressor speed according to the ambient temperature, inverter systems minimize power consumption while maintaining a stable indoor climate. This not only reduces electricity bills but also contributes to a lower environmental impact, aligning with modern sustainability standards.

In terms of comfort, the Sanyo SAP-CMRV1926EH and SAP-CMRV1426EH-F feature sophisticated air distribution systems. They ensure even airflow throughout the area, eliminating hotspots and providing consistent temperatures. Additionally, the models are equipped with multi-split capabilities, allowing for multiple indoor units to be connected to a single outdoor unit. This versatility is particularly beneficial for larger buildings or homes with varied room requirements.

Both models also prioritize user convenience with sophisticated control options. They offer wireless remote controls as well as compatibility with smart home systems, enabling users to program settings and monitor indoor conditions from their smartphones or tablets. This modern approach enhances user engagement and allows for greater customization of the climate control experience.

Noise levels are another consideration in the design of the SAP-CMRV1926EH and SAP-CMRV1426EH-F. These units operate quietly, ensuring that they do not disrupt the tranquility of living or working spaces. Their low-noise operation is a testament to Sanyo's commitment to creating comfortable environments without compromising on performance.

In summary, the Sanyo SAP-CMRV1926EH and SAP-CMRV1426EH-F models are distinguished by their impressive cooling and heating capacities, energy-efficient inverter technology, advanced air distribution, user-friendly controls, and quiet operation. These features make them an excellent choice for anyone seeking reliable and effective climate control solutions.