System Status Codes; Liquid Level Control Board - mr. steam MS-90E Installation, Operation And Maintenance Manual

mr . steam
®
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SYSTEM STATUS CODES

The control (either iSteam ® , iTempo
Code Code Meaning
H20 Water level is not
satisfied within 5 min.
Prr1 Temperature Probe Error
or Prr2
Err1 Incorrect Field Supply Voltage
(green light on liquid level
control board will be off)
Err2 Button on control is pressed
for more than 5 minutes
Errb Water level not satisfied in a tandem set up - Check secondary generators, see H20.
Err7 Liquid Level Control Board malfunction

LIQUID LEVEL CONTROL BOARD

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GREEN LED is ON when there is 208/240 Volt incoming power connected,
24 Volt transformer secondary output and on-board 5 Volt DC control power are present.
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YELLOW Water level indicator–LED is OFF when no water is detected (for more that 5 seconds). ON when
water level is satisfactory. For units with AutoFlush, if more than five hours have elapsed since
last usage and this LED is ON it is indicative of an AutoFlush or water level probe circuit malfunction.
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RED Contactor relay indicator–LED is ON when relay is closed and sending 24 Volts to the
contactor coil. (This LED comes ON if the generator is ON.)
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FORCE ON Press this button to operate the generator. This button is for trouble shooting only and will operate
TEST BUTTON if a control is connected or not. Pressing the button again will shut the generator OFF. The test button
will only allow the generator to operate for 10 minutes.
Liquid Level Control Board
PN 103975
(shown without wiring)
All drawings are for illustrative purposes only
or iTempo/Plus ) may display a status code if the steam generator is not functioning properly.
™ ™
Probable Cause
Water Supply is off
Defective water feed solenoid
Water feed probe not functioning
Drain Valve Open
AutoFlush not functioning
Control cable/MSTS cable cut
Internal problem with control/MSTS
Incorrect voltage supplied
to Generator
Control cover misalignment
Debris behind control cover
Memory error in LLCB
Explanation of LED Indicators
Installation, Operation & Maintenance Manual
Suggested Remedy
Turn on Water Supply
Check/replace water solenoid valve
Check/clean probe.
Check probe wiring.
Check/Close drain valve
Check/Replace AutoFlush
Replace control cable/MSTS
Replace control / MSTS
Supply steam generator with the correct
voltage noted on the data plate label.
Remove and reinstall control cover
Remove control cover and clean cover,
control and keypad with a damp cloth
Press ON/OFF to clear.
Replace control if code remains.
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