Emerson XFAL-020Z-TFC, XFAL-030Z-TFC, XFAL-035Z-CFV, XFAL-040Z-CFV, XFAL-040Z-TFC Installation And Reference Manual

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Copeland Scroll™ Outdoor Refrigeration Unit

Installation and reference manual

Models: XFAL, XFAM, XFAP

1.5 to 6 HP

AE5-1412 R1

August 2016

Copeland Scroll™ Outdoor Refrigeration Unit

X-Line User Manual

TABLE OF CONTENTS

Section Page Section Page

1. Introduction .......................................................4

2. Nomenclature ....................................................4

3. Electrical/Physical Data ...................................5

4. Installation/Piping Instructions .......................5

5. Quick Setup Guide ............................................6

6. User Interface ....................................................7

6.1. Button Descriptions and Key Combinations....... 8

6.2. Changing a Parameter Value ............................. 8

6.3. Entering the Advanced Options Menu ............... 8

6.4. Moving Parameters Between the Programming

Menu and the Advanced Options Menu ............. 8

6.5. Locking the Keypad ........................................... 8

6.6. Unlocking the Keypad ........................................ 8

6.7. Changing Clock Setting .................................... 9

6.8. Refrigerant Selection ......................................... 9

6.9. Fast Access Menu.............................................. 9

6.9.1 List of Fast Access Parameters ................9

6.10. Alarm Menu ...................................................... 10

6.11. How to Program a Hot Key From the Controller

(UPLOAD) ........................................................ 10

6.12. How to Program a Controller Using a Hot Key

(download) ....................................................... 10

6.13. Manual Stepper Control Mode for Vapor Injection (Low Temp) or Liquid Injection (Medium Temp) 10

6.14. Controller Startup ............................................. 11

6.15. Bump Start Control Operation.......................... 11

6.16. Compressor Stop Program .............................. 11

6.17. Crankcase Heater ............................................ 12

6.18. Suction Pressure Control ................................. 12

6.19. Fan Control ...................................................... 12

6.19.1. Fan Overrides and Error Handling ....... 12

6.20. Defrost Controls ............................................... 13

6.20.1. Holiday Defrosts................................... 13

6.20.2. Defrost Functionality ............................ 13

6.20.3. Liquid Line Solenoid Control ................ 13

6.21. Enhanced Vapor Injection (EVI) for Low

Temperature Units............................................ 13

6.21.1. Low Temp EVI Discharge Line

Temperature Protection Mode.............. 13

6.21.1.1. Low Temp EVI Discharge Line Temperature Protection Error

Handling ................................ 14

6.21.2. EVI SYSTEM CHECKS

(XFAL Units Only) ............................................ 14

6.21.3 Constant Liquid Temperature Mode for

Low Ambient EVI Injection .................... 14

6.22. Medium Temperature DLT Protection .............. 14

6.22.1. Medium Temperature DLT Protection

Error Handling .................................................. 14

6.23. Over-Current Protection ................................... 14

6.24. Incorrect Phase Sequence Protection (3 Phase

Only) ................................................................ 15

6.25. Loss of Phase Protection - Current (3 Phase

Only) ................................................................ 15

6.26. Open Run Circuit (Single Phase Only) ............ 15

6.27. Open Start Circuit ............................................ 15

6.28. Over/Under Voltage Protection ........................ 15

6.29. Phase Imbalance (3 Phase Only) .................... 15

6.30. Compressor Internal Thermal Protection ......... 15

6.31. Fixed High Pressure Control ............................ 16

6.32. Alarm Contact .................................................. 16

6.33. Anti-Floodback Warning ................................... 16

6.34. High Condensing Temperature Warning .......... 16

7. Condensing Unit Operational Control ..........16

8. Physical and Installation Requirements ......17

9. Wiring Diagrams .............................................20

10. Refrigerant Liquid Temperature Valve

Capacity Multiplier Correction Factors .........28

11. Alarm Codes ...................................................29

12. Sensor Values .................................................31

13. Parameters ...................................................... 32

552-7018-00

AE5-1412 R1

Safety Instructions

Copeland Scroll™ compressors are manufactured according to the latest U.S. and European Safety Standards. Particular emphasis has been placed on the user's safety. Safey icons are explained below and safety instructions applicable to the products in this bulletin are grouped on Page 3. These instructions should be retained throughout the lifetime of the compessor. You are strongly advised to follow these safety instructions.

Safety Instructions

Copeland Scroll™ compressors are manufactured according to the latest U.S. and European Safety Standards. Particular emphasis has been placed on the user's safety. Safey icons are explained below and safety instructions applicable to the products in this bulletin are grouped on Page 3. These instructions should be retained throughout the lifetime of the compressor. You are strongly advised to follow these safety instructions.

Safety Icon Explanation

DANGER

WARNING

CAUTION

NOTICE

CAUTION

DANGER indicates a hazardous situation which, if not avoided, will result in death or serious injury.

WARNING indicates a hazardous situation which, if not avoided, could result in death or serious injury.

CAUTION, used with the safety alert symbol, indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.

NOTICE is used to address practices not related to personal injury.

CAUTION, without the safety alert symbol, is used to address practices not related to personal injury.

AE5-1412 R1

Instructions Pertaining to Risk of Electrical Shock, Fire, or Injury to Persons

WARNING

ELECTRICAL SHOCK HAZARD

• Disconnect and lock out power before servicing.

• Discharge all capacitors before servicing.

• Use compressor with grounded system only.

• Molded electrical plug must be used when required.

• Refer to original equipment wiring diagrams.

•

• Failure to follow these warnings could result in serious personal injury.

PRESSURIZED SYSTEM HAZARD

• System contains refrigerant and oil under pressure.

• Remove refrigerant from both the high and low compressor side before removing compressor.

•

• Never install a system and leave it unattended when it has no charge, a holding charge, or with the service valves closed without electrically locking out the system.

• Use only approved refrigerants and refrigeration oils.

• Personal safety equipment must be used.

• Failure to follow these warnings could result in serious personal injury.

BURN HAZARD

• Do not touch the compressor until it has cooled down.

• Ensure that materials and wiring do not touch high temperature areas of the compressor.

• Use caution when brazing system components.

• Personal safety equipment must be used.

• Failure to follow these warnings could result in serious personal injury or property damage.

CAUTION

Safety Statements

• Refrigerant compressors must be employed only for their intended use.

• install, commission and maintain this equipment.

•

• All valid standards and codes for installing, servicing, and maintaining electrical and refrigeration equipment must be observed.

COMPRESSOR HANDLING

• Use the appropriate lifting devices to move compressors.

• Personal safety equipment must be used.

• Failure to follow these warnings could result in personal injury or property damage.

AE5-1412 R1

1. Introduction

Copeland Scroll™ Outdoor Refrigeration Units provide

the many benets of scroll compressor technology, coupled with advanced diagnostic controls, to ensure

reliable performance and operation in foodservice applications.

Electronics are used extensively in its protection and diagnostic features. These features are controlled by an electronic integrated control module. The Dixell XCM25D control module with CoreSense™ technology provides control functions related to temperature and

pressure control, defrost, and compressor protection.

Units are available in 1.5 to 6 HP for coolers and 2 to 6 HP for freezers. All units are 208/230 volts and are available in single or three phase. All -081 bill of material units come factory equipped with a heated and insulated

receiver, service valves, pressure controls, defrost control, lter drier, moisture indicator, crankcase heater, variable speed condenser fan, CoreSense Protection, CoreSense Diagnostics, and two-way communications

standard.

Low temperature XFAL units (-40°F to 0°F saturated suction) also feature an accumulator and oil separator. Discharge line temperature control is provided by enhanced vapor injection (EVI).

™

Discharge line temperature control is accomplished by suction line liquid injection.

Extended medium temp XFAP units (-25F to +45F saturated suction) feature an accumulator. Discharge line temperature control is accomplished by suction line liquid injection.

The Dixell XCM25D Electronic Control Module with CoreSense technology (control module) on Copeland™ condensing units provides many benefits to the

contractor and end-user. It is designed specically for

demanding refrigeration applications to ensure simple installation and precision operation. While the control module replaces existing adjustable low pressure

controls, fan cycle switches and other relays, it also

has additional features. These features include bump

start, data storage, communication, and short cycling

protection.

The control module is preprogrammed with the proper

settings, resulting in little to no setup time. The unit

comes with instructions showing how to adjust the low pressure cut-in and cut out. See the label on the inside of the enclosure for more information.

Condensing unit operating range: -40°F to +120°F

Medium temperature XFAM units (0°F to +45°F saturated suction) include all the standard features.

2. Nomenclature

Nomenclature

X F A M – 0 2 0 Z – T F C – 0 8 1

Family = X-Line

F = Multi-refrigerant

Z = Scroll

60Hz

L = Low Temp

A = Air-Cooled

M = Medium Temp

P = Multiple Applications

1.5 to 6.0 = H.P. CFV = 208/230V-1ph-

Base Model Electrical Bill of Material

TFC = 208/230V-3ph-

60Hz

81 = Standard

0 = UL Listed Product

AE5-1412 R1

3. Electrical/Physical Data

Overall

Dimensions

Model Compressor

XFAL-020Z-CFV ZXI06KCE-PFV 1 16.7 40.5 33.1 1/2 S 7/8 S N/A N/A 9.1 10 10 9.1 NA NA 21.55 35 40 246

XFAL-020Z-TFC ZXI06KCE-TF5 1 16.7 40.5 33.1 1/2 S 7/8 S N/A N/A 9.1 10 10 9.1 NA NA 16.18 25 40 246

XFAL-030Z-TFC ZXI09KCE-TF5 1 16.7 40.5 33.1 1/2 S 7/8 S N/A N/A 9.1 10 10 9.1 NA NA 17.18 25 40 246

XFAL-035Z-CFV ZXI11KCE-PFV 1 16.7 40.5 33.1 1/2 S 7/8 S N/A N/A 9.1 10 10 9.1 NA NA 34.05 50 40 272

XFAL-040Z-CFV ZXI14KCE-PFV 2 16.7 40.5 48.9 1/2 S 7/8 S N/A N/A 13.4 14.8 14.7 13.4 NA NA 40.1 60 40 274

XFAL-040Z-TFC ZXI14KCE-TF5 2 16.7 40.5 48.9 1/2 S 7/8 S N/A N/A 13.4 14.8 14.7 13.4 NA NA 27.1 45 40 312

XFAL-050Z-TFC ZXI15KCE-TF5 2 16.7 40.5 48.9 1/2 S 7/8 S N/A N/A 13.4 14.8 14.7 13.4 NA NA 28.85 45 40 323

XFAL-051Z-CFV ZXI16KCE-PFV 2 16.7 40.5 48.9 1/2 S 7/8 S N/A N/A 13.4 14.8 14.7 13.4 NA NA 44.73 70 40 343

XFAL-060Z-TFC ZXI18KCE-TF5 2 16.7 40.5 48.9 1/2 S 7/8 S N/A N/A 13.4 14.8 14.7 13.4 NA NA 33.98 50 40 341

XFAM-015Z-CFV ZS09KAE-PFV 1 16.7 40.5 33.1 1/2 S 7/8 S 10.7 10.5 9.1 10 10 9.1 9.7 9.7 13.55 20 40 218

XFAM-015Z-TFC ZS09KAE-TF5 1 16.7 40.5 33.1 1/2 S 7/8 S 10.7 10.5 9.1 10 10 9.1 9.7 9.7 11.05 15 40 219

XFAM-017Z-CFV ZS11KAE-PFV 1 16.7 40.5 33.1 1/2 S 7/8 S 10.7 10.5 9.1 10 10 9.1 9.7 9.7 16.8 25 40 219

XFAM-017Z-TFC ZS11KAE-TF5 1 16.7 40.5 33.1 1/2 S 7/8 S 10.7 10.5 9.1 10 10 9.1 9.7 9.7 14.05 20 40 219

XFAM-022Z-CFV ZS15KAE-PFV 1 16.7 40.5 33.1 1/2 S 7/8 S 10.7 10.5 9.1 10 10 9.1 9.7 9.7 20.68 35 40 220

XFAM-022Z-TFC ZS15KAE-TF5 1 16.7 40.5 33.1 1/2 S 7/8 S 10.7 10.5 9.1 10 10 9.1 9.7 9.7 14.3 20 40 219

XFAM-030Z-CFV ZS21KAE-PFV 1 16.7 40.5 33.1 1/2 S 7/8 S 10.7 10.5 9.1 10 10 9.1 9.7 9.7 30.05 50 40 236

XFAM-030Z-TFC ZS21KAE-TF5 1 16.7 40.5 33.1 1/2 S 7/8 S 10.7 10.5 9.1 10 10 9.1 9.7 9.7 20.05 30 40 236

XFAM-045Z-CFV ZS33KAE-PFV 2 16.7 40.5 48.9 1/2 S 7/8 S 15.7 15.5 13.4 14.8 14.7 13.4 14.2 14.3 37.35 60 40 285

XFAM-045Z-TFC ZS33KAE-TF5 2 16.7 40.5 48.9 1/2 S 7/8 S 15.7 15.5 13.4 14.8 14.7 13.4 14.2 14.3 29.98 50 40 280

XFAM-050Z-CFV ZS38K4E-PFV 2 16.7 40.5 48.9 1/2 S 7/8 S 15.7 15.5 13.4 14.8 14.7 13.4 14.2 14.3 41.85 70 40 292

XFAM-050Z-TFC ZS38K4E-TF5 2 16.7 40.5 48.9 1/2 S 7/8 S 15.7 15.5 13.4 14.8 14.7 13.4 14.2 14.3 28.85 45 40 292

XFAM-060Z-TFC ZS45K4E-TF5 2 16.7 40.5 48.9 1/2 S 7/8 S 15.7 15.5 13.4 14.8 14.7 13.4 14.2 14.3 31.98 50 40 299

XFAP-015Z-CFV ZS09KAE-PFV 1 16.7 40.5 33.1 1/2 S 7/8 S 10.7 10.5 9.1 10 10 9.1 9.7 9.7 13.55 20 40 233

XFAP-015Z-TFC ZS09KAE-TF5 1 16.7 40.5 33.1 1/2 S 7/8 S 10.7 10.5 9.1 10 10 9.1 9.7 9.7 11.05 15 40 234

XFAP-017Z-CFV ZS11KAE-PFV 1 16.7 40.5 33.1 1/2 S 7/8 S 10.7 10.5 9.1 10 10 9.1 9.7 9.7 16.8 25 40 234

XFAP-017Z-TFC ZS11KAE-TF5 1 16.7 40.5 33.1 1/2 S 7/8 S 10.7 10.5 9.1 10 10 9.1 9.7 9.7 14.05 20 40 234

XFAP-022Z-CFV ZS15KAE-PFV 1 16.7 40.5 33.1 1/2 S 7/8 S 10.7 10.5 9.1 10 10 9.1 9.7 9.7 20.68 35 40 235

XFAP-022Z-TFC ZS15KAE-TF5 1 16.7 40.5 33.1 1/2 S 7/8 S 10.7 10.5 9.1 10 10 9.1 9.7 9.7 14.3 20 40 234

XFAP-030Z-CFV ZS21KAE-PFV 1 16.7 40.5 33.1 1/2 S 7/8 S 10.7 10.5 9.1 10 10 9.1 9.7 9.7 30.05 50 40 251

XFAP-030Z-TFC ZS21KAE-TF5 1 16.7 40.5 33.1 1/2 S 7/8 S 10.7 10.5 9.1 10 10 9.1 9.7 9.7 20.05 30 40 251

XFAP-045Z-CFV ZS33KAE-PFV 2 16.7 40.5 48.9 1/2 S 7/8 S 15.7 15.5 13.4 14.8 14.7 13.4 14.2 14.3 37.35 60 40 300

XFAP-045Z-TFC ZS33KAE-TF5 2 16.7 40.5 48.9 1/2 S 7/8 S 15.7 15.5 13.4 14.8 14.7 13.4 14.2 14.3 29.98 50 40 295

XFAP-050Z-CFV ZS38K4E-PFV 2 16.7 40.5 48.9 1/2 S 7/8 S 15.7 15.5 13.4 14.8 14.7 13.4 14.2 14.3 41.85 70 40 307

XFAP-050Z-TFC ZS38K4E-TF5 2 16.7 40.5 48.9 1/2 S 7/8 S 15.7 15.5 13.4 14.8 14.7 13.4 14.2 14.3 28.85 45 40 307

XFAP-060Z-TFC ZS45K4E-TF5 2 16.7 40.5 48.9 1/2 S 7/8 S 15.7 15.5 13.4 14.8 14.7 13.4 14.2 14.3 31.98 50 40 314

Generator Requirements: In situations or locations where an electrical power generator is used for backup, the Copeland Scroll Outdoor Refrigeration Unit requires a supply voltage of 186-253 VAC.

# of

Fans

(in)

L W H Liquid Suction R-134a R-22 R-404A R-407A R-407C R-507A R-448A* R-449A*

Refrigerant

Connections

Receiver Capacity

(Lbs @ 90% Volume)

MCA

Max

Fuse*

Defrost

Relay

Rating

(Amps)

†

Ship

Weight

(lbs)

4. Installation/Piping Instructions

A clearance of 8 inches from the wall (or the next unit) is required from the unit’s left and rear panel; a

clearance of 20 inches is required from the unit's right,

top and front panels. (See diagams in section covering Physical and Installation Requirements) Ensure that the hot discharge air from one unit does not circulate to another unit.

The unit is designed to mount on the ground, on a roof, or on a wall. For ground mounting, the units should be

placed on a level solid concrete slab with rubber strips

between the feet and concrete, or other raised support structure. For wall mounting, use a wall bracket system

designed for mounting condensing units or universal metal framing strut and follow the manufacturer's instructions. All mounting options must follow local

zoning and building codes.

Pipes should be sized for optimum performance and

good oil return, and for the full capacity range through

which this particular unit will need to operate. Follow the ASHRAE guidelines for proper piping practice.

5. Quick Setup Guide

AE5-1412 R1

6. User Interface

The controller display is shown below along with the function of each light. The controller displays the current suction pressure to three digits in pounds per square inch gage (psig). The controller uses a 7-segment display for digits and the following alpha characters:

The 7-segment alphabet and Roman equivalent:

A b C d E F H i L M n o P q r S T U Y 0 1 2 3 4 5 6 7 8 9

The letters G, J, K, Q, V, W, X and Z are not used on the 7-segment display.

LED MODE FUNCTION

ON Compressor enabled

Flashing Anti-short cycle delay enabled

ON Condensing fans enabled

ON Display temperature value in degrees F

Flashing Programming mode

ON Display pressure value in PSI

ON Browsing service menu

Flashing Fast access menu (Viewing set points and measured values)

ON Browsing the alarm menu

Flashing New alarm occurred

ON An alarm is occurring

ON In defrost or evap fan drip time when ON

ON Evaporator fans enabled

AE5-1412 R1

6.1. Button Descriptions and Key Combinations

(SET) Select a parameter or conrm an

operation when in programming mode.

(RESTART) Hold for 5 seconds to reset

any lockouts if the current state of the controller allows for reset. Allows a manual restart and a “dead band reset”.

(UP) View current measured values (Fast

Access Menu); in programming mode or any menu to browse the parameter codes or increase the displayed value.

(DOWN) in programming mode or any

menu to browse the parameter codes or decrease the displayed value.

(SERVICE) To enter the service and alarm menu.

Hold for 3 seconds to start a manual

defrost

Press and hold for about 3 sec to lock (Pon) or unlock (PoF) the keyboard.

Press together to exit from programming

mode or from menu; on submenus to return to previous level.

Press together for 3 sec to access to rst

level of programming mode.

6.2. Changing a Parameter Value

To change a parameter value:

1. Hold down keys for 3 seconds or until the 'F' LED starts blinking to enter the module’s programming menu.

2. Use or to select the rtC or PAr menu

3. Press to enter the menu.

4. Use or to select the required parameter.

5. Press the key to display its value.

6. Use or to change its value.

7. Press to store the new value.

TO EXIT: Press or wait 60 seconds without pressing a key.

NOTE: The set value is stored even when the procedure is exited by waiting for the time-out to expire.

6.3. Entering the Advanced Options Menu

1. Hold down keys for 3 seconds or until the F LED starts blinking to enter the module’s programming menu.

2. Use or to select the PAr menu

3. Press to enter the PAr menu

4. Use or to select the PAS parameter

5. Press to select PAS

6. The blinking PAS label will be showed for a few seconds

7. Will be showed 0 - - with blinking 0: insert the password [321] using the keys UP and DOWN and

conrming with SET key.

6.4. Moving Parameters Between the Programming

Menu and the Advanced Options Menu

While in the advanced options menu, certain parameters

will have a (.period) in between the 2nd and 3rd character, for example Ci.n. These parameters are in the Programming Menu as well as the Advanced Options Menu.

To add or remove a parameter from the programming

menu, press the keys together while the parameter name is on the display in the advanced options menu. The (.period) between the 2nd and 3rd parameter will either be added or removed.

TO EXIT: Press or wait 60 seconds without pressing the keys.

6.5. Locking the Keypad

1. Press the keys for 3 seconds.

2. The POF message will be displayed and the keyboard will be locked. The Fast Access Menu will remain accessible whil the keyboard is locked.

3. If a key is pressed more than 3 seconds the POF message will be displayed.

6.6. Unlocking the Keypad

Press the keys for 3 seconds until the Pon message is displayed.

NOTE: If a menu does not have any parameters

available, noP will be displayed

AE5-1412 R1

6.7. Changing Clock Setting

6.8. Refrigerant Selection

Using parameter REF set the refrigerant as follows (refer to nameplate for approved refrigerants):

Refrigerant rEF

R-404A 404

R-507 507

R-134A 134

R-22 r22

R-407C 07C

R-407A 07A

R-407F 07F

R-448A 48A

R-449A 49A

6.9. Fast Access Menu

This menu allows viewing measured values from various probes and view some outputs resulting from these measurements. The values nP or noP stand for probe not present or value not evaluated. Err means the

value is out of range, probe is damaged, not connected, or incorrectly congured.

Press to enter the Fast Access Menu.

Use or arrows to select an entry, then press

to see the value or to go on with other value.

TO EXIT: Press or wait 60 seconds without pressing the keys.

6.9.1. List of Fast Access Parameters:

 P1P Suction pressure

 P2t Condenser temperature

 P2P Not Used

 P3t Discharge line temperature

 P4t EVI heat exchanger vapor inlet temperature

(XFAL only)

 PSt EVI heat exchanger vapor outlet

temperature (XFAL only)

 P6t Ambient temperature

 P7t Liquid line temperature (XFAL only)

 5H Not used

 oPP Percentage of liquid injection (XFAP/

XFAM) or vapor injection (XFAL) valve opening.

 LLS Not used

 Std Current condenser temperature target for

fan speed control

 A00 Fan speed percent

 d5o Not used

 L t Not used

 H t Not used

 tU1 Line voltage (1-phase)

 tU2 Line voltage (3-phase)

 tU3 Line voltage (3-phase)

 tA1 Current (1-phase)

 tA2 Current (3-phase)

 tA3 Current (3-phase)

 HM Menu

AE5-1412 R1

6.10. Alarm Menu

The controller time-stamps and stores the last 50 alarms. See Section 11 for alarm codes.

Action Button Notes

Enter alarm menu Push and release alarm key (Displays SEC when alarm menu is active)

Enter alarm list Press SET to conrm

Scroll through active and recorded alarm list

Scroll the list of alarms and see the list of active alarms with the number of the alarm (Letter+Number, A01-A50). Push Down key and see the alarm Name or Code. Push Down key and see the next active alarm

Select the alarm to

Enter the sub menu with alarm time details

see the date and time

Scroll through alarm information data

Successive presses of the down arrow button will display the clock

data label (hour, minute, day, month, year) followed by the value of the

preceding label. The up arrow will reverse this order and show the value followed by the label. The displayed values record the start time of an alarm.

Exit menu Press SET and UP together or wait about 10 seconds.

6.11. How to Program a HOT-KEY From the Controller (UPLOAD TO OVERWRITE HOT-KEY)

Caution: Overwrites hot key. When the controller is ON,

insert the HOT-KEY into the 5-PIN receptacle (labeled H-K) and push the button; the UPL message appears followed a by a ashing End label.

Push button and the End will stop ashing.

Turn OFF the controller, remove the HOT-KEY and then

turn the controller ON again.

NOTE: the Err message appears in case of a failed programming operation. In this case push the again if you want to restart the upload again or remove the HOT-KEY to abort the operation.

6.12. How to Program a Controller Using a HOT-KEY (Download)

A hot key is included with each unit for factory reset and replacement control programming. Remove power from the unit.

Insert a pre-programmed HOT-KEY into the 5-PIN receptacle (labeled H-K) and reapply power to the unit.

The parameter list of the HOT-KEY will be automatically downloaded into the controller memory. The doL message will blink followed by a ashing End label.

After 10 seconds the controller will restart and begin

working with the new parameters.

Remove the HOT-KEY

NOTE: The message Err is displayed for failed programming. In this case turn the unit off and then on if you want to restart the download again or remove the HOT-KEY to abort the operation.

6.13. Manual Stepper Control Mode for Vapor Injection (Low Temp) or Liquid Injection (Medium Temp)

For troubleshooting purposes, the stepper setting can

temporarily be manually adjusted.

From the standard display screen, pressing SET and

SERVICE/ALARM key for 3 seconds will enter a manual stepper control mode.

In the manual stepper control mode, the display shows

the current step count of the valve.

In manual stepper control mode, all algorithms controlling the stepper valve are suspended, but the

rest of the functions operate normally

The up and down arrows on the keypad open and

close the valve, with the display showing the updated

step count

If the controller is left untouched for 60 seconds or

the set and up button are pressed together to exit, the

controller will resume normal operation.

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