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– Step 1 of 3

Dealer Information

Dealer Name *

Technician Name *

First

Last

Technician Phone Number *

Technician Email Address *

If you all ready working with a Customer Assurance Manager please select them below

Are you currently on the job site? *

Outdoor Unit Information

Model Number *

Installation date *

What type of Compressor

Residential 1Ph
Commercial 3Ph

Serial Number *

Fail Date *

What, in your estimation, is wrong with the compressor? *

Will not start
Grounded winding
Shorted winding
Open winding
Tripped the breaker / fuse
Won’t pump
Low capacity
Noisy ___ (REQUIRED: Sound Complaint Checklist _____(link Coming Soon)

Was all factory wiring confirmed to match the diagram on the unit? *

If your unit has a capacitor, did you test the run capacitor? *

Was a Hard Start Kit installed to try to get the compressor started? *

How many µF did you measure? *

Line voltage at the disconnect (VAC) *

Voltage on the load side of the contactor(VAC) *

L1 & L2 for Variable Speed Systems, connections when engaged/calling for operation (volts)

COMMON winding – compressor starting amps(LRA) *

COMMON winding – compressor running amps(RLA) *

RUN winding – compressor starting amps(LRA) *

RUN winding – compressor running amps(RLA) *

START winding – compressor starting amps(LRA) *

START winding – compressor running amps(RLA) *

L1 to L2 – Voltage Reading(VAC) *

L1 to ground – Voltage reading(VAC) *

L1 to L3 – Voltage Reading(VAC) *

L2 to ground – Voltage Reading(VAC) *

L2 to L3 – Voltage Reading(VAC) *

L3 to ground – Voltage Reading(VAC) *

L1 winding – compressor starting amps(LRA) *

L1 winding – compressor running amps(RLA) *

L2 winding – compressor starting amps(LRA) *

L2 winding – compressor running amps(RLA) *

L3 winding – compressor starting amps(LRA) *

L3 winding – compressor running amps(RLA) *

Important Note:

Before making any of the following electrical checks.

Disconnect the electrical power supply to the outdoor unit.

And remove the wiring from the compressor terminal connections!!

C to R – Compressor winding resistance (Ω) *

C to ground – Resistance (Ω) *

C to S – Compressor winding resistance (Ω) *

R to ground – Resistance (Ω) *

R to S – Compressor winding resistance (Ω) *

S to ground – Resistance (Ω) *

L1 to L2 – Compressor winding resistance (Ω) *

L1 to ground – Resistance (Ω) *

L1 – L3 Compressor winding resistance (Ω) *

L2 to ground – Resistance (Ω) *

L2 – L3 Compressor winding resistance (Ω) *

L3 to ground – Resistance (Ω) *

Did you check compressor winding resistance at the fusite/compressor connections? *

Why not?

We would hate to see you do all of this work just because of a bad wire or wiring harness.

Pictures of the outdoor unit

Click or drag files to this area to upload. You can upload up to 2 files.

Inspect all wiring, is there any damage to wire or wire terminals *

Has the compressor failed any of the winding tests *

if Yes, than an acid test must be made of the compressor oil.

Inspect compressor contactor, are the contact points burned *

Has acid been detected in the compressor oil *

Whenever the system is opened to the Atmosphere, it is required that a replacement Liquid line drier be installed in the system.

When Acid is detected in a system utilizing a acid test kit, a Suction Line Filter Drier must be installed!!!

Is a Liquid Line Drier Installed? *

Where is the Liquid Line Drier Installed? *

Outside near Outdoor Unit
Inside Near Evaporator Coil

Is a suction Line Drier Installed? *

If yes how long has it been installed?

Compressor Mechanical Tests

Note: before the mechanical testing can be completed the compressor and the unit wiring must be reconnected as per unit electrical wiring diagram.

With the unit connected to electrical power, will the compressor operate *

If no: revert back to compressor winding information and collect information again.

Compressor Pressure Information

Discharge pressure at the Liquid Line service valve(psig)

The small pipe

Liquid Line temperature at the Liquid Line service valve(F)

The small pipe

Suction pressure at the Vapor Line service valve(psig)

The large insulated pipe

Vapor Line temperature at the Vapor Line Service valve(F)

The large insulated pipe

Now lets try to pump down the unit.

Start by closing the Liquid Line Service valve. Watching the unit suction/low pressure gauge.

Let the unit operate until 1 of the following actions occur:

5 mins of continous operation with minimal pressure change
Compressor cycles off on internal overload(high temp)
Unit cycles off on low pressure(somewhere between 15-35 psig)
No low pressure switch on system and suction pressure drops down to around 0-10 psig.

If you are working with a scroll compressor it will become louder at the lower pressures and may not pull completely down to 0 PSIG as the scroll plates seperate due to lack of pressure differential. This is normal, but should be able to get below 30 psig.

Will the unit pump down to a low pressure between 0-30 psig? *

If a compressor failed and the cause has not been determined and eliminated, the replacement compressor will fail.

Since you cannot see inside of a hermetically sealed compressor the oil is a
valuable service tool on what caused the failure. Make an oil inspection and measurement tool out of an old clear one gallon milk jug. Prior to use add ounce lines to the jug.

The oil quantity is listed on the compressor data tag.
Place the removed compressor on a secure tailgate or bench.
Slowly tip the compressor toward the open suction stub.
Place the milk jug under the suction stub to capture the used oil.
Look at the clarity and quantity of the coil.
Once done with your inspection pore the oil back into failed compressor suction stub.

For additional compressor pressure and temperature testing questions refer to the System Analyzer Form!

Any other comments or notes you would like to add?

Compressor Evaluation Form

Dealer Information

Outdoor Unit Information

Important Note:

Before making any of the following electrical checks.

Disconnect the electrical power supply to the outdoor unit.

And remove the wiring from the compressor terminal connections!!

Why not?

Compressor Mechanical Tests

Note: before the mechanical testing can be completed the compressor and the unit wiring must be reconnected as per unit electrical wiring diagram.

Compressor Pressure Information

Now lets try to pump down the unit.

If a compressor failed and the cause has not been determined and eliminated, the replacement compressor will fail.

Since you cannot see inside of a hermetically sealed compressor the oil is a
valuable service tool on what caused the failure. Make an oil inspection and measurement tool out of an old clear one gallon milk jug. Prior to use add ounce lines to the jug.

For additional compressor pressure and temperature testing questions refer to the System Analyzer Form!

Once the CAM Team/Technical Support has had an opportunity to evaluate the supplied information we will reach out to you with potential steps.

Dealer Information

Outdoor Unit Information

Important Note:

Before making any of the following electrical checks.

Disconnect the electrical power supply to the outdoor unit.

And remove the wiring from the compressor terminal connections!!

Why not?

Compressor Mechanical Tests

Note: before the mechanical testing can be completed the compressor and the unit wiring must be reconnected as per unit electrical wiring diagram.

Compressor Pressure Information

Now lets try to pump down the unit.

If a compressor failed and the cause has not been determined and eliminated, the replacement compressor will fail.

Since you cannot see inside of a hermetically sealed compressor the oil is a valuable service tool on what caused the failure. Make an oil inspection and measurement tool out of an old clear one gallon milk jug. Prior to use add ounce lines to the jug.

For additional compressor pressure and temperature testing questions refer to the System Analyzer Form!

Once the CAM Team/Technical Support has had an opportunity to evaluate the supplied information we will reach out to you with potential steps.

Since you cannot see inside of a hermetically sealed compressor the oil is a
valuable service tool on what caused the failure. Make an oil inspection and measurement tool out of an old clear one gallon milk jug. Prior to use add ounce lines to the jug.