TriangleTube Marquis TWH180, User Manual

Page: 21 / 28

19
Error Codes
Error codes
Error
Code
Error Code Description Possible Remedies
Lockout
Type
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 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 2.5DC before ignition, less than 2.5DC after ignition.
4. Check igniter transformer for proper connection.
5. Clean the igniter with steel wool to remove oxides. Ensure proper separation
(3-4 mm).
6. Replace the spark igniter if damaged.
7. Assure that the flame is stable when lit.
8. If the problem persists, replace the main control.
Hard Lock
16
Operating Temperature Sensor or
D H W S e n s o r d e t e c t s Wa t e r
Temperature Greater than 199
°F
(93
°C
)
This Error Code will go away when the DHW temperature decreases.
If Error happens again:
1. Check if dip switch High 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.
5. If the problem persists, replace the main control.
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 resistance. If resistance is zero, replace the
switch.
3. If the problem persists, replace the main control.
Hard Lock
29
APS/Condensate – Closed is
Normal, Open is Fault (Conden-
sate Drain Trap)
Press the Power button to clear the Error Code.
1. Check APS/Condensate and main controller connections. Ensure all are secure.
2. Check APS/Condensate resistance. If resistance is zero, replace the switch.
3. Check APS/Condensate hose. Ensure it is connected and in good condition.
4. Check condensate line and termination for blockages.
5. Check exhaust vent for blockages.
6. If the problem persists, replace the main control.
Hard Lock
31 Inlet Water Sensor Open or Short
This Error Code will go away when inlet water temperature decreases.
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.
3. If the problem persists, replace the main control.
Soft Lock
32 DHW Sensor Open or Short
This Error Code will go away when outlet water temperature decreases.
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.
3. If the problem persists, replace the main control.
Soft Lock