64 • Carel IR33+ Emergency Guide
Hybrid
™
Display Cases
CAREL IR33+ EMERGENCY GUIDE
CAREL IR33+ EMERGENCY GUIDE
ZERO ZONE, INC. • 800-247-4496 • ZERO-ZOnE.COM
© 2022 Zero Zone, Inc. all Rights Reserved. • Jan 2022
66-0022 REV F
Hybrid
™
Display Cases
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 1 hour.
2. Identify the alarm code displayed on the screen. The 4 most common alarm codes are listed below:
“E0” = Case temperature probe error.
“E1” = Defrost temperature probe error.
“HI” = High temperature inside the display case. Display will alternate between “HI” and the temperature reading when alarm is active.
“LO” = Low temperature inside the display case. Display will alternate between “LO” and the temperature reading when alarm is active.
Note: “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 that can be completed by store personnel:
a. Verify that a door is not accidentally held open. Sometimes product 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.
