Water Heater User Manual

1 Service
Details Screen:
The Details Screen is accessed by pressing the DETAIL button
on the Status Screen. This screen shows the status of the
various safeties, inputs and outputs to each control module.
Selection of the control module to be viewed is accomplished
by pressing the SELECT button. The control module being
displayed is shown in the module box.
Displayed items are as follows:
• HW Thermostat - Is ON when a Hot Water call has been
received from a tank thermostat. Is OFF when a Hot
Water call has not been received from a tank thermostat.
• Gas Pressure Switches - Is ON when the high and low gas
pressure switches are closed. If OFF when either the high
or low gas pressure switches are open.
• Louver Proving Switch - Is ON when a remote proving
safety switch is closed. Is OFF when a remote proving
safety switch is open.
• Manual Reset High Limit - Is ON when the manual reset
high limit is closed. Is OFF when the manual reset high
limit is open.
• Air Pressure Switch - Is ON when the combustion air
blower is energized and the flap valve switch is closed.
Is OFF when the flap valve switch is open.
• Flow Switch / Low Water Cutoff - Is ON when the low
water cutoff contacts are closed or if an optional flow
switch is used and it is closed as well. Is OFF when the
low water cutoff contacts are open or if an optional flow
switch is open.
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Service Manual
• Blocked Drain Switch - Is ON when the blocked drain
switch on the condensate trap is closed. Is OFF when the
blocked drain switch on the condensate trap is open.
• Auto Reset High Limit - An auto reset high limit is not used
in the standard configuration of the Armor X2 water
heater. If OFF is shown then a wiring problem exists.
• HW Pump - Is ON when a Hot Water Generation call has
been received from a tank thermostat or a tank sensor and
the hot water generation pump is energized. Is OFF when
the hot water generation pump is de-energized.
• Gas Valve - Is ON when the gas valve is energized. Is OFF
when the gas valve is de-energized.
• Alarm - Is ON when a fault has been detected and the
alarm contacts are closed. Is OFF when the alarm
contacts are open.
• Blower Power - Is ON when the combustion air blower is
energized. Is OFF when the combustion air blower is de-
energized.
• Run Time Contacts - Is ON when the burner is energized.
Is OFF when the burner is de-energized.
• 0-10Vdc - Shows the voltage signal being delivered from a
remote Building Management System (BMS).