Daikin Condensing Unit DX13SN0241BA

WARNING: HIGH VOLTAGE! Disconnect ALL power before servicing or installing. Multiple power sources may be present. Failure to do so may cause property damage, personal injury or death.

If all tests fail to show the cause for failure, proceed with the following steps:

Unit wiring removed from disconnect switch and test cord wired to the disconnect switch

NOTE: The wire size of the test cord must equal the line wire size and the fuse must be of the proper size and type.

Protective terminal cover in place, three leads to the compressor terminals connected

NOTE: The compressor may run backwards (noisy operation) for 1 or 2 seconds at shutdown. This is normal and does not harm the compressor.

Install gauges and verify that the suction pressure drops while the discharge pressure increases.

Listen for normal compressor sound levels. Reverse rotation results in elevated or unusual sound levels.

Reverse rotation will result in substantially reduced amp draw from tabulated values.

To correct improper rotation, switch any two power supply leads at the outdoor unit contactor.

The 3-phase scroll compressors are direction of rotation sensitive. They will rotate in either direction depending on the phasing of the power. There is no negative impact on durability caused by operating 3-phase compressors in reversed rotation.

The compressor’s internal protector will trip, de-energizing the compressor. Continued operation of 3-phase scroll compressors with the rotation reversed will contribute to compressor failure. All 3-phase scroll compressors should be checked for correct phase rotation.

Sign off on the compressor rotation check

WARNING: Hermetic compressor electrical terminal venting can be dangerous.

Ensure all open flame, electrical power, and other heat sources are extinguished or turned off prior to servicing a system.

Compressor terminal PROTECTIVE COVER and gasket properly in place and secured

Proper evacuation of a hermetic system at the time of manufacture and during servicing

Upload a photo of the compressor terminal

Sign off on the compressor check

WARNING: HIGH VOLTAGE! Disconnect ALL power before servicing or installing. Multiple power sources may be present. Failure to do so may cause property damage, personal injury or death.

Fuse, circuit breaker, ground fault protective device, etc. has not tripped.

Remove the leads from the compressor terminals. See warnings S-17 before removing compressor terminal cover.

Using an ohmmeter, test continuity between terminals S-R, C-R, and C-S, on single phase units or terminals T2, T2 and T3, on 3 phase units.

If either winding does not test continuous, replace the compressor.

NOTE: If an open compressor is indicated, allow ample time for the internal overload to reset before replacing compressor.

Enter the reading of the ohmmeter

Sign off on the resistance test

Install a thermocouple type temperature test lead on the tube adjacent to the defrost control. Insulate the lead point of contact.

Temperature at which the control closes its contacts for Part # 0130M00009P

Temperature at which the control closes its contacts for Part # 0130M00001P or B1370803

Temperature at which the control closes its contacts for Part # 0130M00085

Temperature at which the control opens its contacts for Part #0130M00009P

Temperature at which the control opens its contacts for Part # 0130M00001P or B1370803

Temperature at which the control opens its contacts for Part # 0130M00085

If not as above, replace control.

Sign off on the defrost thermostat test