Reset To Factory Settings - Emerson "Hot Key; How To Save Factory Settings Or User Settings; Applicable Hot Key For Zx Units With Xcm25D Controller; Location Of The "Hot Key" Plug Connection On The Xcm25D Controller - Emerson Copeland EazyCool ZX Series Application Manuallines

The temperature value depends both on parameter G02 and parameter G11 (maximum pumpdown
time). It means that when the liquid line solenoid is off, the compressor will stop because of suction
pressure decrease within G11 time. If the running time of the compressor exceeds G11 value, the
compressor will be forced to shut down and the controller will generate a pumpdown alarm.
2.16 Reset to factory settings – Emerson "Hot Key"

2.16.1 How to save factory settings or user settings

There is no way to reset the XCM25D controller to factory settings other than with additional
equipment. Emerson recommends to use the Emerson "Hot Key" (not part of the standard delivery)
to save the factory settings at initial power up. The same hot key can also be used to save user
settings.
By means of a special programming software (Emerson Wizmate) and corresponding hardware
(Emerson Prog-Tool), the user can:
▪ pre-program hot keys;
▪ copy hot keys;
▪ change parameter levels;
▪ compare parameter lists.
For further information please visit our website at
local Application Engineering representative.

2.16.2 Applicable hot key for ZX units with XCM25D controller

The Emerson "Hot Key" DK00000300 can be used for uploading and downloading of parameter lists.
Copeland ident number 3226456.

Figure 17: Emerson "Hot Key"

2.16.3 Location of the "Hot Key" plug connection on the XCM25D controller

The "Hot Key" plug connection is located on the upper left corner of the XCM25D.

Figure 18: Location of "Hot Key" plug connection

2.16.4 How to program a "Hot Key" from the controller (upload)

▪ Program the controller with the front keypad.
▪ When the controller is on, insert the "Hot Key" and press the UP key; the "uPL" message appears
followed a by a flashing "End" label.
▪ Press the SET key and the "End" label will stop flashing.
▪ Turn the controller off, remove the "Hot Key" then turn it on again.
NOTE: The "Err" message appears in case of a failed programming operation. In this case
push the key again if you want to restart the upload or remove the "Hot Key" to abort the
operation.
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