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SECTION II
TESTING AND TROUBLESHOOTING
Table 2-1. Troubleshooting Guide - continued
Problem
Symptom
Check
Correction
Control PC board has
had a software /
hardware failure.
DIsconnect power; then
check for disconnected
wiring in sterilizer or facility.
Connect power & run
additional cycle.
If error code persists, replace
control PC board. Refer to
para 4.13.
Sterilizer does not complete
(Software interrupt error) cycle.
Control PC board has a
software / hardware
malfunction.
Disconnect power for
approx. 10 seconds; then
connect power & run
additional cycle.
If error code persists, replace
control PC board. Refer to
para 4.13.
Sterilizer does not complete
cycle.
Control PC board has a
software / hardware
malfunction.
Disconnect power for
approx. 10 seconds; then
connect power & run
additional cycle.
If error code persists, replace
control PC board. Refer to
para 4.13.
Sterilizer does not complete
cycle.
Door switch is
malfunctioning.
Perform continuity check on
door switch.
Replace door switch. Refer to
para 4.14.
Unplug pulse solenoid; then
run M9/M11 Door Opening
Test. Refer to para 4.28.
Replace pulse solenoid. Refer
to para 4.15.
Error code 10
(Watchdog timer reset
error)
Sterilizer does not complete
cycle.
Probable Cause
Error code 11
Error code 12
(Ram test error)
Error code 13
-M9D & M11D only
(Door switch status
unchanged since last
cycle)
Blown Fuses
Main fuse on PC board blown Shor t in pulse solenoid.
No Display Lights
Unit displays temp. &
pressure, but does not show
LED status lights.
Low Water Light
(comes on after
Water continuously fills
chamber.
-
Water level sensor dir ty
or malfunctioning.
Clean water level sensor;
then perform continuity
check.
Replace water level sensor.
Refer to para 4.10.
Temperature sensor
malfunctioning.
Disconnect temp. sensor
from PC board; then check
for proper operation.
Replace temperature sensor.
Refer to para 4.9.
Filter is dir ty/clogged.
Clean filter with speedclean
& brush or in ultrasonic
cleaner.
Replace filter if necessary.
Refer to para 4.19.
Debris trapped in fill
solenoid.
Disassemble fill solenoid
and remove any debris.
Replace fill solenoid. Refer to
para 4.12.
approx. 5 min.)
Water is not entering
chamber.
Low Water Light
(comes on
Low water light illuminates as Condensing tank level
soon as cycle is star ted.
sensor malfunctioning.
immediately)
(Older-style units only)
© Midmark Corporation 2002 SF-1827
-
Disconnect power for approx.
30 seconds. Then connect
power and check for proper
operation.
Page 2-4
-
Unplug sensor from PC board
& permanantely jumper
connection on board.
Printed in U.S.A.