Fault And Alert Messages (cont)
Call the technical support phone number listed on the back cover for further technical assistance or to locate a qualified service agent in your area.
Possible Causes - Check/Repair |
| Displayed Fault/Alert Message | ||||
• The control system has detected the Blower Prover Switch |
|
|
|
|
|
|
| Blower Prover Failure |
| ||||
contacts are closed when they should be open at the beginning of |
|
| ||||
a heating cycle - see the Sequence Of Operation on page 59. |
|
| Fault occurred 2 mins ago |
|
|
|
|
|
|
|
|
| |
• Pinched/shorted Blower Prover Switch wiring - see Figure 3 on |
| The blower prover switch is |
|
| ||
|
|
| ||||
| closed out of sequence. |
|
|
| ||
page 8 for switch location. |
|
|
|
| ||
|
|
|
|
|
| |
• Jumper wire connected to the Blower Prover Switch - remove |
|
|
|
|
|
|
jumper wire. Jumper wires must never be used, read all Warnings |
| Call a service professional: |
|
| ||
on page 57. |
| Your Company Name Here |
|
| ||
• Excessive wind outdoors pressurizing the vent system piping. |
| (press [DOWN] for more....) |
|
| ||
|
|
| ||||
• Excessive negative air pressure in the installed space. |
| CHANGE | BACK | ADVANCED |
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
• The control system has detected the Blower Prover Switch |
|
|
|
|
|
|
contacts are remaining open after the control system has |
| Blower Prover Open |
| |||
energized the Combustion Blower - see the Sequence Of |
|
| ||||
|
| Fault occurred 2 mins ago |
|
|
| |
Operation on page 59. |
|
|
|
|
| |
| The blower prover switch remains |
|
| |||
• Loose or open wiring to the Blower Prover Switch - see Figure 3 on |
|
|
| |||
| open after the blower has been |
|
| |||
|
|
| ||||
page 8 for switch location. |
| energized. |
|
|
| |
• Blower Prover Switch air sensing tube disconnected, kinked, filed |
| Call a service professional: |
|
| ||
with condensate, damaged or leaking - repair or replace tube. |
|
|
| |||
• Combustion Blower is not running when energized. |
| Your Company Name Here |
|
| ||
| (press [DOWN] for more....) |
|
| |||
• Loose or open wiring to Combustion Blower. |
|
|
| |||
| CHANGE | BACK | ADVANCED |
| ||
• Loose, open, incorrect wiring to the VFD on AHCG3 130T 400 |
|
| ||||
|
|
|
|
|
| |
models - see Figure 3 on page 8 and the wiring diagram on page 65. |
|
|
|
|
|
|
• The control system has detected the Blocked Intake Air Switch |
|
|
|
|
|
|
| Blocked Air Intake |
| ||||
contacts are open. |
|
| ||||
• Loose or open wiring to the Blocked Intake Air Switch - see Figure |
|
| Fault occurred 2 mins ago |
|
|
|
| The combustion air intake is |
|
| |||
3 on page 8 for switch location. |
|
|
| |||
• Excessive equivalent pipe length, exceeded the maximum number |
| restricted. |
|
|
| |
|
|
|
|
|
| |
of 90° elbows or wrong pipe size used in the intake air piping |
|
|
|
|
|
|
system - see Venting Requirements on page 22. |
| Call a service professional: |
|
| ||
• Balance plate and/or intake air screen was not removed prior to |
| Your Company Name Here |
|
| ||
connecting the intake air piping to the water heater and is clogged/ |
| (press [DOWN] for more....) |
|
| ||
|
|
| ||||
blocked with debris - see Figure 17 on page 24. |
| CHANGE | BACK | ADVANCED |
| |
• Excessive negative air pressure in the installed space. |
|
| ||||
|
|
|
|
|
| |
|
|
|
|
|
| |
• The control system has detected the ECO (energy cut out) Switch |
|
|
|
|
|
|
contacts are open. |
|
|
|
|
|
|
| Energy Cut Out (ECO) |
| ||||
• The ECO switch is a normally closed switch that opens on a |
|
| ||||
temperature rise to prevent excessive water temperature in the |
|
| Fault occurred 2 mins ago |
|
|
|
| Tank temperature is excessive. |
|
| |||
storage tank. The ECO switch is inside the Upper Temperature |
|
|
| |||
Probe (two red wires) - see Figure 3 on page 8 for Upper Probe |
| The water heater has been |
|
| ||
| disabled. |
|
|
| ||
location. |
|
|
|
| ||
|
|
|
|
|
| |
• Loose or open wiring to the ECO switch in the Upper Temperature |
| Call a service professional: |
|
| ||
Probe - two red wires. |
| Your Company Name Here |
|
| ||
• Improper water system piping and/or excessively high return |
| (press [DOWN] for more....) |
|
| ||
|
|
| ||||
(recirculation) loop water temperature - see the Water Piping |
| CHANGE | BACK | ADVANCED |
| |
Diagrams beginning on page 67. |
|
| ||||
|
|
|
|
|
| |
|
|
|
|
|
|
|
• The control system has not detected any voltage from the powered |
|
|
|
|
|
|
anode rods - see Figure 3 on page 8 for location. |
|
|
|
|
|
|
|
| Alert: |
|
|
| |
• No water in the storage tank. |
|
|
|
|
| |
|
| No Anode Voltage |
| |||
• Loose or open wiring connections to the powered anode rods - see |
|
|
| |||
|
| Alert occurred 2 mins ago |
|
|
| |
Figure 3 on page 8 for location. |
| No voltage detected from |
|
|
| |
• Powered anode rod wiring shorted to ground. |
| Powered Anode(s). |
|
|
| |
• The water heater is not properly grounded - see Power Supply |
|
|
|
|
|
|
Connections on page 39. |
| Call a service professional: |
|
| ||
• Loose or open ground wires. |
| Your Company Name Here |
|
| ||
• Top fitting (3/4 inch bushing) of the powered anode rods were |
| (press [DOWN] for more....) |
|
| ||
| CHANGE | BACK | ADVANCED |
| ||
saturated with water during installation - with power to the water |
|
| ||||
heater turned off, carefully remove anode rods and dry out |
|
|
|
|
|
|
|
|
|
|
|
| |
bushing(s). |
|
|
|
|
|
|
59
