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4
6.1 Error Codes (continued)
Error
Code
Error Code Description
Possible Remedies
*Lockout
Type
39
Flame Detected after
Exiting a Flame On
Condition
This Error Code will
clear
when the false flame condition is remedied.
If Error happens again:
1. Check the water heater cover. Ensure it is secure. Flame detection sensor can detect an external
light source.
2.
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.
Soft Lock
40
Gas Leakage is
Detected in 10
Minutes, or three times
within One Hour
(Greater than 5
Seconds Each Time)
IMPORTANT: If you smell gas, STOP! Follow the instructions on page
1
, this manual, and call a
qualified service technician or the fuel gas utility.
Press the Power button to clear the Error Code.
If Error happens again:
1.
Check the water heater cover. Ensure it is secure.
2.
Check gas connections for leakage with a soapy solution. Fix any leaks.
3.
Check condition of the burner assembly.
Hard Lock
41
Fan Speed too High
with Flame On
Press the Power button to clear the Error Code. If Error happens again:
1.
Check the vent connections for blockages.
2.
Check the burner assembly.
3.
Check fan operation. If fan appears to be operating normally but RPMs are too low or too high,
replace the fan.
Hard Lock
42
APS - Closed is
Normal, Open is
Fault
Press the Power button to clear the Error Code.
1.
Check APS and main controller connections. Ensure all are secure.
2.
Check APS resistance. If resistance is zero, replace the
air pressure
switch.
3.
Check APS hose. Ensure it is connected and in good condition.
4.
Check exhaust vent for blockages.
Hard Lock
43
Burner Overheat
Switch Open
Press the Power button to clear the Error Code. If Error happens again:
1. Check burner overheat switch connections. Ensure connections are secure.
2. Check the High Limit Overheat switch. With the switch at room temperature measure the continuity.
3. If the switch is not closed replace the switch.
Hard Lock
44
Possible pump failure
Press the Power button to clear the Error Code.
1.
Check pump.
2.
If the problem persists, replace the pump.
Hard Lock
45
Water Leak Detection
If Error happens, the cold inlet water valve closes automatically to prevent water leak damage.
1.
Turn power off to the water heater.
2.
Valve off the water heater to isolate it from the system.
3.
Call a qualified installer / service technician to diagnose and repair the source of the leak.
Hard Lock
46
Low recirculation
flow
Press the Power button to clear the Error Code
1.
Check return and cold water filters.
2.
Verify recirculation loop length is within specification.
3.
Check the pump operation.
4.
Check recirculation setting. (External or On-Demand setting without dedicated return line.
External
or On-Demand setting with crossover valve)
5.
If the problem persists, replace the pump.
Hard 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...
