GP GSWH-1, Руководство по обслуживанию, Страница: 14 / 18

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6.
Flame okay during trial for ignition (TFI), no flame sense (after TFI)
a.
Check Electrode and High Voltage Wire for Continuity
b.
Poor ground at burner
c.
Bad circuit board (check flame current); CONFIRM with Approved Board Tester such as
Fenwal part # 05-080224-009) - Replace
GENERAL FAILURES AND POSSIBLE CAUSES AND REMEDIES
1.
No Blower, no Spark and no Gas
a.
No or Low Voltage: Correct Power Supply - Minimum 10.5 VDC
b.
Defective ON/OFF switch: Check for Power Coming into Switch; If no Power, Replace
Switch
c.
Defective or Stuck Flow Switch: Tap with Wrench; if Problem not Solved, Replace Flow
Switch
d.
Check Relay
e.
Check ECO
f.
Dirty Edge Connector on Circuit Board: Clean Edge Connector
g.
Defective circuit board CONFIRM with Approved Board Tester such as Fenwal part # 05-
080224-009) - Replace
2.
No Spark and No Gas (Blower Operating)
a.
Low voltage: Correct Power Supply - Minimum 10.5 VDC
b.
Check for Flow of Water
c.
Check Relay
d.
Check ECO
e.
Check for Flow of Power OUT of Sail Switch to Circuit Board
f.
Dirty edge connector on circuit board: Clean edge connector
g.
Defective circuit board: Confirm with Approved Board Tester such as Fenwal part # 05-
080224-009) - Replace
3
. Water Heater Lockout - Spark present but no gas
a.
Check Gas Pressure: Set inlet pressure at a Minimum 11
˝ W.C. with Two or More Gas
Appliances Running.
b.
No or Low Voltage: Correct power supply - 10.5 VDC Minimum
c.
Loose Wire Connections on Gas Valve. Confirm Connections
d.
Test Resistance of Coils - Confirm 30 - 50 ohms
e.
Defective gas valve: Replace Coils or Gas Valve
f.
Dirty connector on Circuit Board: Clean Edge Connector
g.
Defective circuit board: CONFIRM with Approved Board Tester such as Fenwal
part # 05-080224-009) - Replace