Installation Guide

mr
.
steam
®
Installation, Operation & Maintenance Manuals
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I N S T A L L E R
17
Force On
Test Button
Yellow
(Water Level)
Green
(Power)
Red
(Heater)
EXPLANATION OF THE STATUS CODES DISPLAYED ON THE CONTROL
The control (either iSteam
®
, AirTempo
®
, iTempo
®
or iTempo/Plus
®
) may display a status code if the steam generator
is not functioning properly.
Code Code Meaning Probable Cause Suggested Remedy
H20 Water level is not Water Supply is off Turn on Water Supply
satisfied within 5 minutes
Defective water feed solenoid Check/replace water solenoid valve
Water feed probe not functioning Check/clean probe.
Check probe wiring
Drain Valve Open Check/Close drain valve
AutoFlush not functioning Check/Replace AutoFlush
Prr1 Temperature Probe Error Control cable/MSTS cable cut Replace control cable/MSTS
or Prr2
Internal problem with control/MSTS Replace control / MSTS
Err1 Incorrect Field Supply Voltage Incorrect voltage supplied Supply steam generator with the correct
(green light on Circuit Board to Generator voltage noted on the data plate label
will be off)
Err2 Button on control is pressed Control cover misalignment Remove and reinstall control cover
for more than 5 minutes
Debris behind control cover Remove control cover and clean cover,
control and keypad with a damp cloth
Errb Water level not satisfied in a tandem set up - Check secondary generators, see H20.
Err7 Circuit Board malfunction Memory error in Circuit Board Press ON/OFF to clear.
Replace control if code remains
Additional Error Codes can be found in the control installation instructions.
EXPLANATION OF LED INDICATORS ON THE CIRCUIT BOARD
Electric shock hazard. MrSteam steam generators are connected to 240V line voltage and contain live electrical
components. All installation and service to be performed by qualified and licensed electricians and plumbers only. Installation or
service by unqualified persons or failure to use MrSteam parts may result in property damage or in a personal injury.
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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 than 5 seconds). ON when water level is
satisfactory. For units with AutoFlush, if more than two hours have elapsed since last usage and the LED is ON
it is indicative of an AutoFlush or water level probe circuit malfunction. Except when the Express Steam is installed,
Express Steam units will refill after AutoFlush cycle.
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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.
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Circuit Board
PN 104288
(shown without wiring)
All
drawings
are
for
illustrative
purposes
only