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SECTION 6 Error Codes
6.1 Error Codes
Error
Code Error Code Description
Possible Remedies
*Lockout
Type
10
Flame has been lost
8 (eight) times
Press the Power button to clear the Error Code. If Error happens again:
1.
Monitor the gas pressure to the water heater while in operation. Ensure pressure is between 3.5 and
14"WC.
2.
Check gas valve wire. Ensure connection is secure.
3.
Check flame detection sensor. Ensure connections are secure. Normal operating Settings are more
than
2.5
V
DC before ignition, less than 2.5
V
DC after ignition.
4.
Check ignit
ion
transformer for proper connection.
5.
Clean the spark igniter with steel wool to remove oxides. Ensure proper separation
0.12" -0.16"
(3 - 4
mm).
6.
Replace the spark igniter if damaged.
7.
Ensure that the flame is stable when lit.
Hard Lock
11
Ignition has Failed
10 (Ten) Times
Press the Power button to clear the Error Code. If Error happens again:
1.
Monitor the gas pressure to the water heater while in operation. Ensure gas pressure is between 3.5" WC
and 10.5" WC for NG and between 8" WC and 14" WC for LP.
2.
Check gas valve wire. Ensure connection is
secure.
3.
Check flame detection sensor. Ensure connections are secure. Normal operating settings are more
than 2.5
V
DC before ignition, less than 2.5
V
DC after ignition.
4.
Check ignit
ion
transformer for proper connection.
5.
Clean the spark igniter with steel wool to remove oxides. Ensure separation
of 0.12" -
0.16"
(3-4 mm).
6.
Replace the spark igniter if damaged.
7.
Assure that the flame is stable when lit.
Hard Lock
16
Operating
Temperature Sensor
or DHW Sensor
detects Water
Temperature Greater
than 199
°
F (93
°
C)
This Error Code will
clear
when the DHW temperature decreases. If Error happens again:
1.
Check if dip switch MAX Fire setting is ON. Switches 6 and 7 should be OFF for normal operation.
2.
Check if DHW pipe is blocked. Ensure there is enough water flowing to the water heater.
3.
Check DHW sensor at DHW outlet. If resistance is zero, replace the sensor.
4.
Check Operating Temperature sensor at the heat exchanger. If resistance is zero, replace the
sensor.
Soft Lock
20
High Limit Overheat
Switch – Closed is
Normal, Open is
Fault
Press the Power button to clear the Error Code.
1.
Inspect the High Limit Overheat switch. Ensure proper connections.
2.
Check High Limit Overheat switch. With the switch at room temperature measure the continuity.
Hard Lock
29
Condensate Trap
Blocked
Press the power button to clear the error code.
1.
Check condensate line and termination for blockages.
2.
Check exhaust vent for blockages.
Hard Lock
31
Inlet Water Sensor
Open or Short
This Error Code will
clear
when inlet water temperature
reads correctly.
If Error happens again:
1.
Check inlet water temperature sensor. Ensure connections are secure.
2.
Check sensor resistance. If resistance is zero, replace the sensor.
Soft Lock
32
DHW Sensor Open
or Short
This Error Code will
clear
when outlet water temperature
reads correctly
. If Error happens again:
1.
Check DHW outlet temperature sensor. Ensure connections are secure.
2.
Check sensor resistance. If resistance is zero, replace the sensor.
Soft Lock
33
Operating
Temperature Sensor
Open or Short
This Error Code will
clear
when outlet water temperature
reads correctly
. If Error happens again:
1.
Check operating temperature sensor. Ensure connections are secure.
2.
Check sensor resistance. If resistance is zero, replace the sensor.
Soft Lock
35
Exhaust Sensor
Open or Short
This Error Code will
clear
when exhaust temperature decreases. If Error happens again:
1.
Check exhaust temperature sensor. Ensure connections are secure.
2.
Check sensor resistance. If resistance is zero, replace the sensor.
3.
Check exhaust vent for blockage.
Soft Lock
*Lockout Type :
Hard lock: requires manual reset / Soft Lock: resets itself when issue subsides.
Содержание LT Series
Страница 42: ...Page 42 4 20 Wiring Diagram...
Страница 43: ...Page 43 4 21 Ladder Diagram...
