Douwe Egberts Cafitesse 700, Back Office Manual

Page: 46 / 265

*errors will be logged ** errors will not be logged *** UI-error messages: higher priority overrules lower priority, with same priority message of first appearance is shown
July 2004 3 - 8
No. Description Over-
rules Set condition Reset condition Remarks Cause Remedy Prio-
rity***
32* Cooling compartment
temperature sensor
defective 30, 31 Temperature sensor
reading (measured
temperature <-10°C or
>100°C) Automatically, when
sensor readings are
within limits 1. Wiring incorrect or
connections defective
2. Temperature sensor
defective
3. PCB C not inserted
correctly in the rack or
defective
1. Check wiring or replace
connections (see
chapter 5K)
2. Replace temperature
sensor
(see chapter 5F)
3. Insert PCB C correctly
or replace PCB C (see
chapter 5K)
60
33* Left peltier current is too
low Current sensing circuit
situation
ON mode:
current below 2.2 A for
more than 0.5 sec.
STANDBY mode:
current below 0.2 A for
more than 0.5 sec.
Automatically, when
current is within limits Shown as
warning, no fatal
error yet.
While the error
is shown, the
current control is
continued 1. Air inlet filter soiled
2. Wiring incorrect or
connections defective
3. Peltierelement
defective
4. PCB B not inserted
correctly in the rack or
defective
5. Fan is defective
1. Clean or replace air inlet
filter
2. Check wiring or replace
connections (see
chapter 5K)
3. Replace peltier element
(see chapter 5K)
4. Insert PCB B correctly or
replace PCB B (see
chapter 5K)
5. Replace fan (see
chapter 5F)
10
34* Right peltier current is
too low Current sensing circuit
situation
ON mode:
current below 2.2 A for
more than 0.5 sec.
STANDBY mode:
current below 0.2 A for
more than 0.5 sec.
Automatically, when
current is within limits Shown as
warning, no fatal
error yet.
While the error
is shown, the
current control is
continued 1. Air inlet filter soiled
2. Wiring incorrect or
connections defective
3. Peltier element
defective
4. PCB C not inserted
correctly in the rack or
defective
5. Fan is defective
1. Clean or replace air inlet
filter
2. Check wiring or replace
connections (see
chapter 5K)
3. Replace peltier element
(see chapter 5K)
4. Insert PCB C correctly
or replace it (see
chapter 5K)
5. Replace fan (see
chapter 5F)
10