Marvel 6CARM Troubleshooting Guide download pdf (Page 15)

perature alarm will acvate at 9°C = (4 [setpoint] + 3 [Ahi] + 2

[hysteresis])

The

number of degrees C colder relave to setpoint

that will iniate a low temperature alarm. Once

the compartment temperature exceeds the low temperature

alarm value, the control will delay AdL minutes before iniang

the alarm. See Alarm Delay secon below for instrucons to

set alarm delay. While ALo is displayed on the screen, press and

hold SET key to view the value of ALohi. To adjust the value, con-

nue to hold SET then use the WARMER and COLDER keys unl

the desired value is shown on the screen. Release the SET key to

conrm the new seng. Factory default value for ALo is -2.0°C.

Note: Seng ALo = 0 will disable the low temperature alarm.

No hysteresis value is added to ALo. For example, let setpoint =

4°C, and ALo = -3. The low temperature alarm will acvates at

1°C = (4 [setpoint] + -3 [ALo])

The number of minutes the

compartment temperature must be outside the

range specied by Ahi and ALo before a tempera-

ture alarm acvates. While AdL is shown on the screen, press

and hold SET key to view the value of AdL. To adjust the value,

connue to hold SET then use the WARMER and COLDER keys

unl the desired value is shown on the screen. Release SET key

to conrm the new seng. Factory default value for AdL is 60

minutes.



 The operang me of

the condenser since the last cleaning. The control

monitors the operang me of the condenser fan to determine

when the condenser is in need of being cleaned. While cnd is

displayed on the screen, press and hold SET key to view the value

of cnd. The value shown is the number of weeks the condenser

has been operang. To reset cnd, connue to hold the SET key

then press and release the ON/OFF key.

When the control recommends the condenser be cleaned, a

reminder will be displayed on the screen (see Alarm Codes.) To

clear the alarm code, reset the value in cnd following the instruc-

ons printed above.

 This feature is

used to prevent incidental changes to the set

point, or accidentally turning the unit o. While

Loc is displayed on the screen, press and hold the SET key. If

“No” is displayed, Lockout feature is o, and all keys

are enabled. If “Yes” is displayed, Lockout feature is

ON. The ability to turn the unit on and o, as well as the ability

to adjust setpoint will be disabled. To change the keypad lockout

seng, connue to hold the SET key, then use the WARMER and

COLDER keys to set the desired value.

APPENDIX A, ADDITIONAL MICROSENTRY™ FEATURES



To access the informaon menu, press the SET key, and immedi-

ately release it.

In the informaon menu, a 2 or 3 digit code will be displayed

represenng each entry in the informaon menu. The rst code

displayed will be t1. With each sequenal press and release of

the SET key, the following codes will appear in this order: t1, thi,

tLo, Ahi, ALo, AdL, cnd, and Loc.

To view the value of each code, press and hold the SET key aer

the desired code is displayed. Addionally, the WARMER and

COLDER keys may be used to scroll through the menu. To exit

the informaon menu, press the ON/OFF key, or wait for several

seconds with no key presses.

 Press and

hold the “SET” key to display the current interior

temperature.

 While

thi is shown on the screen, press and hold the

“SET” key to display the maximum recorded

temperature. The temperature is updated every 5 minutes. To

reset the maximum temperature; connue to hold the SET key,

then press and release the ON/OFF key to reset the maximum

temperature. The maximum temperature will be reset to the

current compartment temperature.

It is recommended that thi be reset aer the inial pull-down

(24 hours aer power on) to clear any residual values.

While tLo

is shown on the screen, press and hold the “SET”

key to display the minimum recorded tempera-

ture. The temperature is updated every 5 minutes. Connue to

hold the SET key then, press and release the ON/OFF key to reset

the minimum temperature. The minimum temperature will

be reset to the current compartment temperature. It is recom-

mended that tLo be reset aer the inial pull down (24 hours

aer power on) to clear any residual values.

The

number of degrees C warmer relave to the

setpoint that will iniate a high temperature

alarm. Once the compartment temperature exceeds the high

temperature alarm value, the control will delay AdL minutes

before iniang the alarm. See Alarm Delay secon below for

instrucons to set alarm delay. While Ahi is displayed on the

screen, press and hold SET key to view the value of Ahi. To

adjust the value, connue to hold SET then use the WARMER

and COLDER keys unl the desired value is shown on the screen.

Release the SET key to conrm the new seng. Factory default

value for Ahi is 2.0°C.

Note: Seng Ahi = 0 will disable the high temperature alarm.

The control’s 2°C Hysteresis value is automacally added to Ahi.

For example, let setpoint = 4°C, and Ahi = 3. The high tem-

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