M&C PSS Series Instruction Manual page 36

21 Alarm and Error Messages
The cooler of the sampling system has several monitoring functions. If an alarm limit is exceeded or not reached or
if an error occurs during operation, the corresponding messages are shown on the display. These messages are
displayed cyclically and alternate with the current cooler temperatures.
If several alarm or error messages occur simultaneously, the messages are shown on the display one after the other.
The alarm and error messages are listed here:
Display Description
The temperature of stage 1 has
A1
exceeded the outer limit of the
alarm band
The temperature of stage 2 has
A2*
exceeded the outer limit of the
alarm band
The liquid alarm sensor LA1 has
registered a level of humidity
LA1
corresponding
sensitivity
The temperature sensor 1
cannot be queried or does not
E1
pass the plausibility check
several times
The temperature sensor 2
cannot be queried or does not
E2*
pass the plausibility check
several times
The temperature sensor 3
cannot be queried or does not
E3 pass the plausibility check
several times
No voltage flanks resulting from
a fan rotation are measured
E4
The temperature of cooling
E5 stage 1 exceeds a maximum
value of 60 °C [140 °F]
*This error can only occur when using gas conditioning unit SS5C/2.
36
Action
Relay 1 opens.
Sample gas pump OUT
Relay 2 opens.
Sample gas pump OUT
Relay 1 opens.
Sample gas pump OUT
to the set
Relay 1 opens,
Control of the Peltier element is
switched off.
Sample gas pump OUT
Relay 2 opens,
Control of the Peltier element is
switched off.
Sample gas pump OUT
No effect with absolute value
control. With dT control, the
corresponding relay opens, and
the stage is switched off.
Sample gas pump OUT
Stage 1 and stage 2 switch off
and both relays drop out.
Sample gas pump OUT
Relay 1 opens,
Control of the Peltier element is
switched off
SS5C, SS5C/2, SS5C/3 | 1.00.00
Clear the alarm/error
message
The temperature of stage 1
exceeds the inner limit of the
alarm band
The temperature of stage 2
exceeds the inner limit of the
alarm band
The LA1 must register a dry
state 15 % below the trip limit.
The measured values can be
read again (e.g. after cable
examination or
replacement)
The measured values can be
read again (e.g. after cable
examination or
replacement)
The measured values can be
read again (e.g. after cable
examination or
replacement)
The fan supplies voltage flanks
again (e.g. after
examination or
replacement)
Device restart after cooling
down
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