Elitech ECS-02CX

Small cabinet controller with a large compressor relay (up to 30 A), optional defrost relay and evaporator probe, and two-level (Pr1/Pr2) menus in Dixell style.

What it is: Refrigeration controller

Key combo: Set + down for 3 s for Pr1; keep holding past 7 s for the hidden Pr2 list.

Error codes ↓
Enter service mode ↓
Parameters ↓
Change a setting ↓

Elitech ECS-02CX error codes

Code	Meaning	Likely cause	How to reset
P1	Cabinet probe fault	Probe open or shorted	Automatic once fixed. Compressor cycles on Cy (run) / Cn (stop) meanwhile.
P2	Evaporator probe fault	Probe open or shorted	Automatic. Defrost runs on id and Md times.
HA	High temperature alarm	Cabinet above AU after Ad (and dA at start-up)	Clears below AU. Outputs unchanged.
LA	Low temperature alarm	Cabinet below AL after Ad	Clears above AL. Outputs unchanged.
nP	No evaporator probe	Evaporator reading requested but P2 = n	Information only.
Er	Hot key copy failed	Bad connection or key	Check the key is seated and repeat.
oF / on	Keypad locked / unlocked	Up + down held 3 s	Hold up + down 3 s again.

How to enter service / parameter mode

Hold Set + down for 3 seconds. The set light comes on: this is the user (Pr1) list.
For every parameter, hold Set + down again for more than 7 s until L2 shows (Pr2, hidden list). If Pr1 is empty, nP shows; keep holding until L2.

Parameter list

Code	What it does	Range	Default / typical
St	Set point	LS to US	3
Hy	Hysteresis	0.1 to 10 °C	2
LS	Lowest set point	−50 °C to St	−50
US	Highest set point	St to 99 °C	99
ot	Cabinet probe offset	−9.9 to 9.9 °C	0
P2	Evaporator probe fitted	y / n	y
oE	Evaporator probe offset	−9.9 to 9.9 °C	0
od	Output delay at power-up	0 to 99 min	0
AC	Anti-short-cycle delay	0 to 50 min	1
Cy	Run time with cabinet probe fault	0 to 99 min	15
Cn	Stop time with cabinet probe fault	0 to 99 min	30
CH	Mode	CL cooling, Ht heating	CL
CF	Units	C / F	C
Ld	Default display	P1 cabinet, P2 evaporator, SP set point	P1
dE	Defrost end temperature	−50 to 90 °C	2
id	Defrost interval (0 = none)	0 to 99 h	8
Md	Maximum defrost time	1 to 99 min	20
dF	Display in defrost	rt live, it frozen, St set point, dF label	it
AU	High alarm	AL+1 to 99 °C	99
AL	Low alarm	−50 °C to AU−1	−50
Ad	Alarm delay	0 to 99 min	15
dA	Alarm delay at start-up	0 to 99 min	90

How to change and save a setting

Pick a code with up or down and press Set to show its value.
Change it with up or down.
Press Set to store and move on.
Press Set + up, or wait 15 s, to exit.

Other useful key presses

Task	How
Change set point	Hold Set 2 s, adjust with up/down, press Set
Show evaporator temperature	Tap the defrost key
Manual defrost	Hold the defrost key 2 s (again to stop)
Restore user values	Hold Set + up 10 s until rS shows
Copy to hot key (CPK-4)	Insert the key and hold up until uP shows
Load from hot key	Insert the key and hold down until do shows, then power-cycle

Notes

To move a parameter between Pr1 and Pr2, open it in the hidden menu and press Set + down: decimal point off means it is now in Pr1.

For licensed technicians only. This equipment can involve mains voltage, high-voltage microwave circuits, gas and refrigerant. Isolate power (and gas) before opening panels, follow the manufacturer's manual and your local licensing rules (for example ARC refrigerant handling and electrical or gas licences). Wrong settings can spoil food or damage equipment. Check every value on the unit in front of you before changing it.

Based on: Elitech ECS-02CX temperature controller instruction. Always check the manual for your exact model and software version.

ServiceModes is not affiliated with Elitech or any other manufacturer. Written in our own words from the manufacturer's documentation.