5-7
TROUBLESHOOTING
SFT 199 TANKLESS WATER HEATER
5.4.4 Burner ignites loudly
POSSIBLE CAUSES
ANALYSIS
SOLUTION
Inlet pressure is too high.
→ Yes
↓No
The home pressure regulator may be defective. In that
case, contact the energy company.
Ignition distance is incorrect.
→ Yes
↓No
Replace the ignitor including the ignition cable.
Gas-air control is not correctly
adjusted.
→ Yes
Check and/or replace the ignition cable.
Replace the ignition unit in the top cover.
Replace the ignitor.
5.4.5 Burner resonates
POSSIBLE CAUSES
ANALYSIS
SOLUTION
Gas inlet pressure lower than 5“ w.c.
or sometimes disappears.
→ Yes
↓No
The home pressure regulator may be defective. Contact
the energy company.
There is recirculation of fl ue gases.
→ Yes
↓No
Check the fl ue and air supply duct.
Gas-air control is not correctly adjusted.
→ Yes
↓No
Check the adjustment
Burner seal is defective.
→ Yes
↓No
Replace the burner seal.
Burner is defective.
→ Yes
Replace the burner.
Содержание SFT-199
Страница 60: ...INSTALLATION AND OPERATION INSTRUCTIONS 5 8 SFT 199 TANKLESS WATER HEATER This page is intentionally left blank...
Страница 61: ...6 1 DIAGRAMS SFT 199 TANKLESS WATER HEATER 6 0 DIAGRAMS 6 1 PARTS DIAGRAMS 6 2 WIRING DIAGRAMS...
Страница 67: ...SERVICE RECORD DATE LICENSED CONTRACTOR DESCRIPTION OF WORK DONE...
Страница 68: ...NOTES...