Section 3. Troubleshooting; Initial Troubleshooting Chart - Pentair ETi 400 Instructions D'installation

Initial Troubleshooting
Only qualified, trained service technicians with appropriate test equipment should service the heater. Remember that all parts of the
system affect heater operation. Before starting this troubleshooting procedure, make sure that the pump is running correctly, that there
are no blockages in the system, that the valves are correctly set and that the time clock is correctly set and is running.
CAUTION: Installing the BLUE 120 volt plug in the control box and then connecting the heater to a
240 volt line will destroy the transformer, control broad, and ignition control module, and will void the
warranty. If you install the RED 240 volt plug and then connect the heater to a 120 volt line, the heater
READ THE FOLLOWING INFORMATION CAREFULLY
1. Check the line voltage to your heater. This heater will operate on either 120 Volts AC or 240 Volts AC.
2. Remove the covers and check the 12-pin plug in the back of the control box. The plug must match the
voltage in the heater circuit.
3. If the 12-pin plug is not plugged into the back of the control box, select the correct plug from the bag in
the control box and plug it in. The BLUE plug is for 120 volts, the RED plug is for 240 volts.
Error and Fault Codes
The following table lists the ETi 400 Heater Error and Fault Codes.
Fault Condition
SHORTED Stack Flue Sensors
(SFS1 or SFS2) means flue temperature is
greater than 170 F (77.7 C)
OPEN Stack Flue Sensor (SFS)
OPEN Automatic Gas Shut-off Switch (AGS1
and AGS2)--opens when outlet temperature
goes above 150 F (65.5 C)
Air Flow Switch (AFS1 and AFS2)
High Limit Switch (HLS)--Opens when
outlet temperature goes above 135 F (57.2 C)
OPEN Water Pressure Switch (PS)
OPEN Water Temperature Sensor
SHORTED Water Temperature Sensor or
water tempeature greater than 125 F (51.6 C)
OPEN Condensate Float Switch
Flame Sensor
OPEN Thermal Sensor
Rev. C 4/2017
* Error Symbol/Text
(Press and disengage POOL ON
Initial Error and UP arrow at the same time)
Code Display Error display will apear for 30
seconds and then previous state
will display.
E06
SFS symbol will be displayed
E05
(error should
SFS symbol will be displayed
display after 30
sec of firing)
AGS1 or AGS2 symbol will be
displayed along with text "AG1" or
"AG2".
AFS symbol
displayed along with text "AFS".
HLS Symbol will be displayed
along with text "HLS".
PS symbol will be displayed
along with text "PS".
E01
E01
126 126
"FS" text will be displayed
IGN symbol will be displayed
along with text "IGN"
tf Symbol will be displayed
along with text "tf".
ETi 400 High Efficiency Pool and Spa Heater Installation and User's Guide
Section 3: Troubleshooting
Section 3: Troubleshooting
Note
All keypad disabled
Follow diagram on page 50
(To Reset: Cycle
Power)
All keypad disabled
Follow diagram on page 50
except OFF (To
Reset: OFF key)
All keypad disabled
(To Reset: Cycle Follow diagram on page 49
Power)
will be
Follow diagram on page 49
Follow diagram on page 49
Follow diagram on page 49
LED 7 will light up
Follow diagram on page 49
on back of board
Follow diagram on page 49
Follow diagram on page 51
All keypad disabled
(To Reset: Cycle
Follow diagram on page 47
Power)
Follow diagram on page 51
Troubleshooting
43