Hussmann SHM Series, Installation & Operation Manual

P/N 0515258_N

3-7

HUSSMANN CORPORATION • BRIDGETON, MO  63044-2483  U.S.A.

SHM Merchandisers

RTN400

Page  21/130

SETPOINT: SETTING AND EDIT LOCK

To display the Setpoint value, press the 

set

  key to enter the “Machine Status” menu, then press the 

set

  key again when the “SEt” 

label is displayed.
The Setpoint value appears on the display. To change the Setpoint value, press the 

 and 

 keys within 15 seconds.

Press 

set

  to confirm the modification.

set

set

set

It is possible to disable the keypad on this device.
The keypad can be locked by programming the “LOC” parameter appropriately.
With the keypad locked, you can still access the “Machine Status” menu by pressing 

set

  to display the Setpoint, but you cannot edit 

it. To disable the keypad lock, repeat the locking procedure.

DISPLAY PROBES VALUE

To display the value read by probes connected to the device, press the 

set

  key and enter the “Machine Status” menu, then press 

the key again when one of the probe-related labels “Pb1...Pb5” press the 

set

  key again. The value measured by the associated 

probe will appear on the display.

NOTE: The displayed value is read-only and cannot be modified.

KEY-ACTIVATED FUNCTIONS

All models have the 

UP key set to enable the “Manual Defrost” function.

The DOWN and ESC keys can also be set to activate any other function required by the user.
The parameters for configuring the two keys are:

• H11 = DOWN key configuration

• H33 = ESC key configuration

The values that can be set apply to both keys and the functions that can be activated are:

H32/H33 value

Function to enable

0

disabled

1

defrost

2

reduced set

3

Light

4

Energy saving

5

AUX

6

Stand-by

7

Deep cooling cycle

8

Start/end defrost

RTN400

Page  17/130

KDEPLUS BUTTONS

The 

KDEPlus keyboard has 4 keys, as shown in the illustration:

1

2

3

4

Each key has a different function depending on whether it is:

• Pressed and released
• Pressed for at least 5 seconds
• Pressed and held at start-up
• Pressed in combination with another key.

KEYS

The following table summarizes the function of each key:

No

Key

Action

Pressed and released

Press for at least 5 secs

Start-up

1

• Scrolls through menu items
• Decreases values

Activates the 

Manual Defrost function

(from outside menus).

---

2

• Scrolls through menu items
• Decreases values

Function can be configured by the user
(from outside menus).
(see parameter H32)

---

3

• Returns to the previous menu

level

• Confirms parameter value

Activates the Stand-by function
(from outside menus).

---

4

set

• Displays any alarms

(if active)

• Opens Machine Status menu
• Confirms commands

Opens the Programming Menu
(User and Installer parameters)

When pressed during 
start-up it enables 
the user to select the 
application to be loaded.

STANDBY or ESC

DOWN

SET

UP

RTN400

Page  21/130

SETPOINT: SETTING AND EDIT LOCK

To display the Setpoint value, press the 

set

  key to enter the “Machine Status” menu, then press the 

set

  key again when the “SEt” 

label is displayed.
The Setpoint value appears on the display. To change the Setpoint value, press the 

 and 

 keys within 15 seconds.

Press 

set

  to confirm the modification.

set

set

set

It is possible to disable the keypad on this device.
The keypad can be locked by programming the “LOC” parameter appropriately.
With the keypad locked, you can still access the “Machine Status” menu by pressing 

set

  to display the Setpoint, but you cannot edit 

it. To disable the keypad lock, repeat the locking procedure.

DISPLAY PROBES VALUE

To display the value read by probes connected to the device, press the 

set

  key and enter the “Machine Status” menu, then press 

the key again when one of the probe-related labels “Pb1...Pb5” press the 

set

  key again. The value measured by the associated 

probe will appear on the display.

NOTE: The displayed value is read-only and cannot be modified.

KEY-ACTIVATED FUNCTIONS

All models have the 

UP key set to enable the “Manual Defrost” function.

The DOWN and ESC keys can also be set to activate any other function required by the user.
The parameters for configuring the two keys are:

• H11 = DOWN key configuration

• H33 = ESC key configuration

The values that can be set apply to both keys and the functions that can be activated are:

H32/H33 value

Function to enable

0

disabled

1

defrost

2

reduced set

3

Light

4

Energy saving

5

AUX

6

Stand-by

7

Deep cooling cycle

8

Start/end defrost