Zero Zone medium and low temp Hybrid
™
display cases have a built-in alarm system to alert you of problems with the operation of the case.
In the event of a problem, an alarm will sound (a constant beeping noise) and the display will fl ash an error code. If this occurs:
1. Press and hold the “Prg” button on the display for 5 seconds to silence the alarm. The “Prg” button is in the upper left of the control.
Doing so will silence the alarm for 60 minutes.
2. Identify the alarm code displayed on the screen. The FOUR most common alarm codes are listed below:
§
E0 = case temperature probe error
§
E1 = defrost temperature probe error
§
HI = high temperature inside the display case
§
LO = low temperature inside the display case
DEF = case is in defrost (this is not an error code)
3. If the error code is an E0 or an E1, then proceed to step #4; a qualifi ed refrigeration technician is required to correct the situation. In the
event of a high temperature alarm (HI), there is a chance that there is a simple fi x for the problem:
a. Verify that a door is not accidentally held open. Sometimes products will fall off the shelves and prevent a door from fully closing.
b. Confi rm that the case was not recently stocked with product. Holding one of the doors open for an extended period of time (as is the
case when stocking) will raise the internal temperature and possibly set off the alarm.
c. Determine whether a defrost cycle has recently occurred. Following the defrost period, the case temperature may be warmer
than usual.
d. Make sure proper airfl ow is not compromised by debris covering the balloon guard located at the front of each condensing unit on the
top of each case behind the shroud. You will need to use a step ladder to check this. If possible, remove the item or debris blocking
the balloon guard. If you are unable to easily remove the item or debris, call your service provider.
Identifying and correcting any of these problems will return the case temperature to normal conditions.
4. If the source of the problem was not identifi ed in step #3, a service request should be directed to your service provider immediately.
This image shows the controller
at normal operation.
This image shows the controller during an alarm
condition. This is the high temperature alarm code
(HI). Other codes may also be displayed.
(See above for other codes)
MANAGER’S EMERGENCY GUIDE
Hybrid
™
Display Cases
ZERO ZONE, INC. • 800-247-4496 • ZERO-ZONE.COM
© 2015 Zero Zone, Inc. All Rights Reserved. • FEB 2015
MN-07-B
MANAGER’S EMERGENCY GUIDE
Hybrid
™
Display Cases
