HTP CGH-199*, Руководство по установке

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LP-644 Rev. 8.10.17
51
Part 10 - Troubleshooting
A. Error Code
When the water heater encounters an error, the display will flash “Er” followed by a numerical code. The water heater shall enter a soft lockout
condition if the error is such that it can return to normal operation once the condition relieves itself (overheat conditions, NTC open or shorts,
etc.). The water heater shall enter a hard lockout if the condition indicates something more serious (flame, ignition, condensate line, etc.) To
clear a hard lockout Error Code, press the Power button. See Figure 51.
The following screen will display when the water heater encounters an error.
Figure 51 - Error Screen
Error Code Error Code Description Possible Remedies
Er:10
Flame has extinguished 5
(five) times
Press the Power button to clear the Error Code. The Code will also automatically reset after one hour (up to
three (3) times.
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 vent terminations. Ensure there are no blockages.
5. Assure that the flame is stable when lit.
6. If the problem persists, replace the main control.
Er:11
Ignition has failed 5 (five)
times
Press the Power button to clear the Error Code. The Code will also automatically reset after one hour (up to
three (3) times.
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 spark 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.
Er:16
Operating Temperature
Sensor Detects Water
Temperature Greater than
199 o F (93 o 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 inlet 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.
Er:20
Condensate - Closed is
Normal, Open is Fault
(Condensate Drain Trap
Press the Power button to clear the Error Code.
1. Check Condensate and main controller connections. Ensure all are secure.
2. Check Condensate resistance. If resistance is not zero, replace the switch.
3. Check 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.
Er:25
Pump operation fault
NOTE:
This error occurs if
there is no flow through
the unit while firing. This is
detected when the difference
between OP and Outlet (St)
temperature is more than 20F.
This Error Code will go away when the difference between OP temperature and Outlet temperature is less
than 10F.
If Error happens again:
1. Ensure the pump is connected properly and operational. Replace pump if it is not operational.
2. Check Op and Outlet temperature sensors resistance. If resistance is zero, replace the sensor (s).
3. If the problem persists, replace the main control.