Cove DW2450 Service Manual

Error Codes and Troubleshooting
SERVICE MODE
Service mode allows a technician to review various user
settings/offsets, manually activate and deactivate
components, and monitor the unit's performance including
logged errors. In Service mode:
• Bluetooth pairing PIN messaging, Wi-Fi control via
the Sub-Zero Group Owner's App, error detection
and management, and diverter valve movement are
allowed.
• Pressure-based drain pump control is active.
• Standby Power mode, Smart Grid requests, wash
cycles, or monitoring of any analog I/O are not
allowed.
• When the sump fills, it always fills to the volume of
"Main Wash #1" in the NORMAL wash cycle.
Service mode may be activated from the UIM panel, or via
the RS-485 connection using the Connected Diagnostics
program.
Service mode exits after 5 minutes with no input.
ENTER SERVICE MODE
1 Touch and hold Auto and Heavy for 5 seconds or
more.
2 Release Heavy, and continue to hold Auto for 5
seconds.
"Service Mode:" appears on the UIM.
828019 REV B 08/2023
DW2450 and DW2450WS Service Manual
SERVICE MODE FUNCTIONS
Service mode allows two main functions:
• Use the Cancel key to scroll through the error codes.
• Manually turn on and turn off components and
systems to confirm operation. Pressing a UIM key
turns on the corresponding component or system;
pressing the key again turns it off. Only one
component or system can be turned on at a time.
UIM KEY FUNCTIONS IN SERVICE MODE
UIM KEY CONTROL
Auto Toggles drain pump ON/OFF
(up to 50 secs. max. ON time).
Normal Toggles water inlet valve ON/
OFF.
Heavy Toggles wash pump ON/OFF.
Toggles heater ON/OFF (up to
Quick
70º C).
Sets diverter valve position (at
Cycles+
each key press, diverter valve
changes its position). The door
must be shut for 15-45 seconds
to show a position change on
the UIM.
Toggles drying fan ON/OFF.
Options
Toggles water softener
Enter
regeneration valve ON/OFF (if
applicable).
Cancel
• Toggles through any and all
stored error codes.
• Also, touch and hold to exit
Service mode.
Start Toggles dispenser coil ON/OFF
(300 ms ON, then OFF is the
only action).
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DISPLAY
MOT4 (Drain pump
motor)
SOL1 (Water inlet
valve)
MOT1 (Wash pump
motor)
HTR1 (Tub heating
element)
MOT2 (Diverter valve
motor), SV =
requested position,
PV = current position
(0 = Home, 1 =
Middle/Upper, 2 = All,
3 = Lower)
MOT3 (Drying fan
motor)
SOL2 (Water
softener regeneration
valve)
Error log table
SOL3 (Dispenser
coil)