Water Heater Installation Manual

54 Page
Error Code
on the temperature
controller
Green LED
The number
of flashes
Flash pa�ern
031 701 711
One
311 321 331
341 391
Two
111 121
Three
611 661
Four
101 291 941 991
Five
510 551 721
Six
on on
off
off
0.5 sec. on, 0.5 sec. off 3 sec. off
Error Indication
Troubleshoong
Owner's Guide
-Fault Analysis of Error Codes-
If the error code is displayed on the computer board of the water heater or remote controller and/or tempera-
ture controller, please check the following. After checking, consult with the manufacturer.
Controller
Green
LED
Malfunction
description
Diagnosis
031
One
Flash
Incorrect DIP switch
setting
• Check the DIP switch settings on the PCB (Part #701).
101
Five
Flashes
Warning for the “991”
error code
• Ensure the gas type of the water heater matches the gas supplied.
• Inspect the environment around the water heater. Determine how long the
unit has been installed.
• Ensure the heater altitude DIP switches are properly set to match the
installed altitude.
• Check if there is any blockage in the intake air and/or exhaust.
• If the water heater is installed as a direct-vent system, check whether there
is enough distance between the intake air terminal and the exhaust terminal.
• Check if there is grease and/or dirt in the burner (Part #101) and the fan motor
(Part #103), especially if the water heater has been installed in a contaminated
area.
111*
Three
Flashes
Ignition failure
• Check if the Hi-limit switch (Part #412) is properly functioning.
• Check for connection/breakage of wires (Part #413, 708, 709, 711) burn marks on
the computer board (Part #701), and/or soot on the flame rod (Part #108).
• Check if there is a buzzing spark ignition sound coming from the burner (Part
#101) when the water heater prepares for combustion.
• Listen for the double “clunk” sound coming from gas valve assembly (Part
#102) when water heater goes into combustion.
• Check if there is leaking from heat exchanger (Part #401).
121*
Three
Flashes
Loss of flame
• Check if the Hi-limit switch (Part #412) is functioning properly.
• Check for connection/breakage of wires (Part #413, 708, 709, 711) burn
marks on the computer board (Part #701), and/or soot on the flame rod
(Part #108).
• Check if there is leaking from heat exchanger (Part #401).
291
Five
Flashes
Blocked condensate
drain system
• Check for and remove any blockage in the condensate drain line, neutralizer
(if installed), condensate drain assembly inside the water heater (part #416,
421, 423).
• Ensure that any horizontal drain line runs are sloped downward. Removal
any sags in the drain line.