Lochinvar Power-fin 1701 - Manual (Page 41)

3
Troubleshooting
(continued)
Service Manual
41
FAULT DESCRIPTION CORRECTIVE ACTION
Temp O/Shoot
(continued)
(Lockout will reset
automatically after
5 minutes or may be reset
immediately once
condition has been
corrected. Press the
RESET button on the
SMART SYSTEM display
to reset.)
The temperature rise across the heat
exchanger has exceeded the set parameters
for the appliance.
• Verify that the system is full of water and that all air
has been properly purged from the system.
• Verify that the appliance is piped properly into the
heating system. Refer to Section 4 - Water
Connections
of the Power-fin Installation and
Operation Manual for the proper piping methods.
• Check for 120 VAC to the pump motor on a call
for heat. If voltage is not present, check the wiring
leading to the main control board. Replace the main
control board if necessary.
• If 120 VAC is present on a call for heat and the
pump is not operating, replace the pump.
Outlet water temperature has exceeded the
maximum outlet water temperature. • Verify that the system is full of water and that all air
has been properly purged from the system.
• Verify that the appliance is piped properly into the
system. Refer to Section 4 - Water Connections of
the Power-fin Installation and Operation Manual for
the proper piping methods.
• Check 120 VAC to the pump motor on a call for heat.
If voltage is not present, check wiring leading to the
main control board. Replace the main control board
if necessary.
• If 120 VAC is present on a call for heat and the pump
is not operating, replace pump.
• Replace the main control board.
Rem Ctrl Flt
External control is cycling too often. • Check set point of the external control.
• Check the wiring between the external control and
the unit.
• Replace the control.
Parameters
Progr
(Will require a manual
reset once the condition
has been corrected. Press
the RESET button on the
SMART SYSTEM display
to reset.)
After downloading parameters from a laptop
or a pocket pc, the main control board must
be reset.
• Press the ENTER/RESET button on the Smart
System display panel.
Table 3F (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Operator Interface