Troubleshooting – Lochinvar EnergyRite ER402 User Manual
Page 27
3
Troubleshooting
(continued)
Service Manual
27
Table 3D (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Pool Heater
Interface
F
FA
AU
UL
LT
T
D
DE
ES
SC
CR
RIIP
PT
TIIO
ON
N
C
CO
OR
RR
RE
EC
CT
TIIV
VE
E A
AC
CT
TIIO
ON
N
Pool Standby /
Low Water Flow
The pool heater has a call for heat, but
there is insufficient water flow.
• Verify that the system is full of water and that all air
has been properly purged from the system.
• Verify that the pool heater is piped properly into the
heating system. Reference Section 7 - Water
Connections in the EnergyRite Installation and
Operation Manual for the proper piping methods for
the pool heater.
• Replace the switch.
Outlet Sensor
Open
The control does not sense the presence
of an outlet sensor.
• Ensure proper wiring of the outlet sensor.
• Replace the sensor.
• Replace the main control board.
Inlet Sensor Open
The control does not sense the presence
of an inlet sensor.
• Ensure proper wiring of the inlet sensor.
• Replace the sensor.
• Replace the main control board.
Outlet Temp
Exceeded
The outlet temperature has exceeded the
maximum allowable outlet temperature.
• Verify that the system is full of water and that all air
has been properly purged from the system.
• Verify that the pool heater is piped properly into
the heating system. Reference Section 7 - Water
Connections in the EnergyRite Installation and
Operation Manual for the proper piping methods
for the pool heater.
• Measure the resistance of the sensors and
compare the resistance to Table 3B on page 23 of
this manual.
• Replace the sensor if necessary.
Lockout / Low
Water Flow
The pool heater sensed low water pressure
while the pool heater was running.
• Verify that the system is full of water and that all air
has been properly purged from the system.
• Verify that the pool heater is piped properly into
the heating system. Reference Section 7 - Water
Connections in the EnergyRite Installation and
Operation Manual for the proper piping methods
for the pool heater.
Button
Malfunction
One of the buttons has malfunctioned.
• Replace the board.