User Guide

3 Troubleshooting (continued)
Table 3F (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Water Heater Interface
FAULT DESCRIPTION CORRECTIVE ACTION
Flame Sequence
(will require a manual
reset once the condition
has been corrected. Press
the RESET button on the
SMART SYSTEM
display
to reset.)
The flame detector circuit is seeing a flame
signal while no flame is present.
• Check supply voltage for proper polarity.
• Check external wiring for voltage feedback.
• Check the flame rod and make sure it is clean.
• Check the internal wiring for bad connections.
• Replace main control board.
Auto Reset
High Limit
The outlet water temperature has exceeded
the setting of the automatic reset high limit.
• Verify that the system is full of water and that all air
has been properly purged from the system.
• Verify that the water heater is piped properly. Refer
to Section 6 - System Piping of the Armor Wall Mount
Installation and Operation Manual for the proper piping
methods for the Armor water heater.
• Check 120 vac to water heater pump motor on a call
for heat. If voltage is not present, check wiring back
to the main control board.
• Replace the main control board if necessary.
• If 120 vac is present on a call for heat and the water
heater pump is not operating, replace the pump.
• If the manual reset high limit has tripped, check
setting of the device.
• Check resistance of water sensors and compare to
Table 3B on page 26 of this manual. Replace
sensor if necessary.
Manual Reset
High Limit
(will require a manual
reset once the condition
has been corrected. Press
the RESET button on the
SMART SYSTEM
display
to reset.)
The outlet water temperature has exceeded
the fixed setting of the manual reset high
limit.
• Verify that the system is full of water and that all air
has been properly purged from the system.
• Verify that the water heater is piped properly. Refer
to Section 6 - System Piping of the Armor Wall Mount
Installation and Operation Manual for the proper
piping methods for the water heater.
• Check 120 VAC to water heater pump motor on a call
for heat. If voltage is not present, check wiring back
to the main control board.
• Replace the main control board if necessary.
• If 120 VAC is present on a call for heat and the water
heater pump is not operating, replace the pump.
• If the manual reset high limit has tripped, check
setting of the device.
• Check resistance of water sensors and compare to
Table 3C on page 26 of this manual. Replace sensor
if necessary.
31
Service Manual