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Sunday, November 16, 2025

Cd18 Software Revision Number

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Cd18 displays the software revision number

Cd17 Relative Humidity (%)

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Cd17 displays the humidity sensor (HS) reading, as a percent value.

Cd16 Compressor Motor / Unit Run Time Hour Meter

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Unit Run Time Hour Meter Cd16 displays the compressor motor hours. Press the ENTER key while in Cd16 to view unit run time. Total hours are ...

Cd15 Digital Unloader Valve / Digital Loader Valve

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Cd15 displays the status of the digital unloader valve (DUV) as Open or Closed. For PrimeLINE EDGE units (571-3xx models) the status of the ...

Cd14 Compressor Discharge Pressure

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Cd14 displays the compressor discharge pressure transducer (DPT) reading.

Cd12 Evaporator Pressure / Compressor Suction Pressure

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Cd12 displays the evaporator pressure transducer (EPT) reading in the right display. Press the ENTER key to show the reading for the suction...

Cd11 Compressor Discharge Temperature

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Cd11 displays the compressor discharge temperature Sensor (CPDS) reading, using compressor dome temperature.

Cd10 Evaporator Temperature

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Cd09 displays the ambient temperature sensor (AMBS) reading.

Cd09 Ambient Temperature

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Cd09 displays the ambient temperature sensor (AMBS) reading.

Cd08 Main Power Frequency

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Cd08 displays the value of the main power frequency in Hertz. The frequency displayed will be halved if either fuse F1 or F2 is bad (alarm c...

Cd07 Main Power Voltage

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Cd07 displays the main supply voltage.

Cd04 Cd05 Cd06 Line Current Phase A B C

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These codes display the measured of Phase A (Cd04), B (Cd05) and C (Cd06) in amperes. The current sensor measures current on two legs. The t...

Cd03 Compressor Motor Current

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Cd03 displays the current value passing through the compressor motor leg T3. The current sensor measures current draw in lines L1 & L2 b...

Cd01 Capacity Modulation (%)

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Cd01 displays the DUV percent closed. The right display reads 100% when the valve is fully closed. The valve will usually be at 10% on start...
Tuesday, October 14, 2025

Thermo King MP4000 transformer

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Be careful before replace compressor contactor - Checks voltage on the terminal 7 8 must in range 24v to 29v.  If volt over from the range c...