8-3. Checking the Outdoor System

8-3-1. Checking the outdoor unit

No.

Work procedure

Check items (unit operation)

 

 

 

1

• Apply 220 V AC between terminals L and N on the

• The LED (red) on the control board must illuminate.

 

outdoor unit terminal plate.

 

 

 

 

2

• Short-circuit the T-RUN terminal to the COM terminal

• The compressor, fan motor, 4-way valve, and solenoid

 

of TEST/T-RUN terminals.

valve (for the hot gas bypass) must turn ON.

 

 

(They turn ON about (70) seconds later after the power

 

 

is turned ON.)

 

 

 

NOTE If the above check items are okay, but the outdoor unit does not operate, there may be a faulty connection between the indoor unit and the outdoor unit.

8-3-2. Checking the defrost operation

Using forced defrost operation to check this function.

No.

Work procedure

 

Check items (unit operation)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

• Connect a dummy resistor of 39 k ohm to the outdoor

 

Non-stop defrost

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

coil temperature sensor connector.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Indoor fan

 

 

 

 

 

 

30 sec.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Setting

LL Stop

 

 

 

 

 

 

Setting

 

 

 

 

 

 

 

 

 

 

 

 

 

CM

 

 

 

 

 

 

 

(80 Hz)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Solenoid valve

 

 

 

 

 

 

5 sec.

 

 

 

 

 

 

 

10 sec.

 

 

 

(for hot gas

 

 

 

 

 

 

 

 

 

 

 

 

bypass) OFF

 

 

 

ON

 

 

 

 

 

 

OFF

 

 

 

Outdoor fan

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ON

 

 

 

 

OFF

 

 

 

 

 

 

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Defrost start

Release

• The maximum length of defrost operation is 12 minutes.

Defrost can also be released based on the below conditions for the outdoor heat exchanger sensor.

Less than 2 minutes

Not released

2 minutes or more

14 °C or higher (*1)

*1 However, the condition is (20 °C) or higher when the outdoor air temperature is below 0 °C.

73

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Sanyo SAP-CMRV1926EH service manual Checking the Outdoor System, Checking the outdoor unit, Checking the defrost operation
Page 72 Page 74

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.

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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.
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