Siemens Maxum II Manual page 54

General Maintenance and Troubleshooting
4.6 Alarm Codes, Descriptions, and Suggested Actions
# Text
1633 ! Output error on solenoid
- 1638 valve, [left location, left
group; left location, right
group; right location, left
group; right location, right
group; upper location, left
group; upper location, right
group]
1657 ? ABH[1 - 2] No Air on %4
- 1658
1659 ? Invalid Configuration on %4 PECM PIC: An attempt was made to con‐
1665 ? Solenoid valve disconnec‐
- 1670 ted, [left location, left
group; left location, right
group; right location, left
group; right location, right
group; upper location, left
group; upper location, right
group]
1697 ? Purge Loss on %4
54
Description
PECM PIC: The solenoid output status
read-back value is incorrect for at least
one valve in the group. This can happen
when a solenoid cable is disconnected,
even momentarily. Note that the read-
back check can only be accomplished
when the state of the output to a solenoid
is OFF (no verification can be done on an
output when it is ON).
PECM PIC: The air bath heater #n is
turned off, as the air pressure is too low
for a safe operation of the heater. This
flag is set only if the corresponding air
bath heater is in use. The PECM con‐
siders the air bath heater in use if a loop‐
back connector or a cable from a temper‐
ature controller is connected.
trol a heater output with a DO command
while the corresponding loopback is not
installed.
This alarm can be generated as a result
of either of the following:
1. The cable to the corresponding valve
group was disconnected since the last
time the PECM board was reset. As a
result, all valves in that group may not
work properly.
2 A digital output was invoked to a dis‐
connected valve group. The output can‐
not be controlled.
PECM PIC: Purge failure in the EC en‐
closure. The pressure differential be‐
tween the interior and exterior of the EC
is not high enough. Depending on the
environment classification where the an‐
alyzer is installed, this alarm may indi‐
cate an unsafe condition that requires
immediate action to correct.Check sup‐
ply-air pressure.
Action
Verify the cable connections.
Replace the solenoid group cable.
Replace the solenoid group.
Replace the PECM board.
If the channel is not in use, disconnect
the loopback connector or temperature
controller cable.
Check the air pressure on the corre‐
sponding air bath heater. Make sure
that it is 10 psi or above.
Electrically disconnect the pressure
switch:
1. Verify that it operates normally by
measuring the contact resistance with
a multimeter at 0 and 10 psi.
2. Verify with a multimeter that there is
no continuity to ground.
Verify the harness with a multimeter.
Replace the PECM.
Install or verify the corresponding
PECM loopback plug.
Verify that the solenoid valve cable is
properly seated in the connector and
reset the device.
Verify the configuration of the DOs in all
applications to ensure that no DO is ref‐
erencing a valve in a non-connected
group.
Verify that door is closed.
Check for damaged door gaskets.
Verify that all cables and tubes entering
the EC are sealed properly.
Maxum edition II Analyzer General Maintenance
Manual, August 2018, A5E42019842001