User Guide & Service Manual
USER GUIDE
 Control Operation - Service 1
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SAFETY • INSTALLATION & INTEGRATION • OPERATING INSTRUCTIONS • MAINTENANCE • SERVICE
Control Operation - Service
ACTUAL TEMPS
ALL ERRORS
RELAY STATUS
RELAY TOGGLE
INPUT STATUS
O
UTPUTS
OFFSETS
SELF TEST
SET POINTS
MULLION
RE-SELECT MODEL #
FACTORY Wi Fi
FACTORY DEFAULT
TO ENTER THE MAIN SERVICE MENU
PRESS AND HOLD 
FOR 5 SECONDS
AND
SERVICE MENU
ACTUAL TEMPS
RELAY STATUS
ALL ERRORS
ENTER & EXIT 
 SUB-MENU ITEM
SCROLL 
THROUGH
MENU
SHOWS TEMPERATURES WITHOUT OFFSETS. EACH ZONE HAS AN 
EVAP AND AIR THERMISTOR. EACH UNIT HAS AN AMBIENT THERMISTOR
RETURN TO  MENU
ACTUAL TEMPS
LEFT ZONE = 52°
LEFT EVAP = 52°
RETURN TO  MENU
ALL ERRORS
NO COMM 3
L ZONE T OPEN 0
RETURN TO  MENU
RELAY STATUS
MULL COND DEF  LVLV
OFF OFF OFF ON
RETURN TO  MENU
RELAY TOGGLE
MULL OFF
COND OFF
RETURN TO  MENU
INPUT STATUS
LEFT DOOR CLOSED
RIGHT DOOR OPEN
RETURN TO  MENU
OUTPUTS
L EVAP FAN = 0%
R EVAP FAN = 0%
RETURN TO  MENU
OFFSETS
RIGHT ZONE = -18°C
RIGHT EVAP = -17°C
RETURN TO  MENU
SELF TEST
NO ERRORS
RETURN TO  MENU
SET POINTS
LEFT ZONE = 12°C
LEFT EVAP = 7°C
RETURN TO  MENU
FACTORY DEFAULT
RESTORE?
RETURN TO  MENU
RETURN TO  MENU
RE-SELECT MODEL
3090WCWC
DISPLAYS THE NUMBER OF TIMES AN ERROR HAS OCCURRED 
SCROLL TO THE END TO ERASE THE ERROR CODES
DISPLAYS THE CURRENT STATUS OF THE RELAYS ON THE BOARD
(not all relays are used on all models)
ALLOWS THE RELAYS TO BE TOGGLED ON/OFF TO CHECK RELAY & COMPONENT
YOU CAN TURN ON MULTIPLE RELAYS TO CHECK A ZONE, (COMP FAN ETC)
DISPLAYS DOOR SWITCH STATE, TEST INPUT,  AND USB STATE
MONITORS THE STATE OF DC OUTPUTS
(evaSFRQGHQVHUIDQVDQGOLJKWLQJRɞOow - med - high)
OFFSETS ARE USED TO ADJUST OR CORRECT THERMISTOR READINGS
CORRECTED VALUES MAY BE VIEWED THROUGH THE CUSTOMER MENU
SELF TEST IS USED TO DIAGNOSE THE BOARD      IF NO ERRORS ARE PRESENT 
“NO ERRORS” WILL BE DISPLAYED,  THE MAIN BOARD IS FUNCTIONING PROPERLY
THE SET POINTS MENU IS USED TO MODIFY BOTH THE ZONE AND EVAP SET POINTS 
THIS SETTING IS FOR FACTORY USE ONLY AND SHOULD REMAIN OFF
THE EVAP SET POINT IS USED DURING DEFROST, IT MUST REACH 42°F (6°C)
FACTORY DEFAULT IS USED TO RESTORE ALL SETTINGS TO THE FACTORY 
DEFAULT FOR THE SELECTED MODEL
FAN DELAY
SHOWROOM MODE
EXIT
RETURN TO  MENU
FAN DELAY
FAN 1 DELAY OFF = 1
FAN 2 DELAY ON = 2
RETURN TO  MENU
SHOWROOM MODE
OFF
FACTORY WiFi
OFF
FAN DELAY
USB PORT
SHOWROOM MODE
EXIT
RANDOMLY SCROLLS THROUGH ZONES, MODES, TEMPERATURES AND OTHER
FEATURES. TOUCH AND HOLD 
TO EXIT SHOWROOM MODE
SCROLL DOWN TO “EXIT”. TOUCH AND RELEASE TO EXIT SERVICE MODE
FAN DELAY ALLOWS MODIFICATION OF FAN RUN TIMES BOTH AT THE START 
OF A COOLING CYCLE AND AT THE END AFTER THE COMPRESSOR STOPS
RE-SELECT MODEL IS USED TO MODIFY THE MODEL INFORMATION    CHANGING
THE MODEL COMPLETELY REPROGRAMS AVAILABLE ZONES
TO GO TO NEXT SUB-MENU ITEM
YOU MUST ARROW UP TO “RETURN TO MENU”
TOUCH AND  RELEASE 
TO RETURN TO THE MAIN MENU
EVAP FAN
RETURN TO  MENU
EVAP FAN
EVAP FAN ON = 1
EVAP FAN OFF = 60
THIS MENU IS USED TO SET THE DURATION THE EVAPORATOR FAN WILL RUN 
AFTER THE COMPRESSOR CYCLES OFF
THIS MENU IS USED TO SET THE DURATION THE MULLION HEATER WILL BE ON 
AFTER THE COMPRESSOR CYCLES OFF
RETURN TO  MENU
MULL
MULL ON=5
MULL OFF=30
DIFFERENTIALS
RETURN TO  MENU
DIFFERENTIALS
LEFT = -16°C
RIGHT = -16°C
DIFFERENTIALS ARE  USED TO  DETERMINE  AT WHAT TEMPERATURE THE  UNIT 
CYCLES. “O” SETTING IS +/- 2° DIFFERENTIAL










