GBT A2-035, Инструкция по установке и эксплуатации

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Page 27
SYMPTOM POSSIBLE CAUSE CHECKS & REMEDIES
The Pilot Is Lit And
Stays ON, But The
Main Burner Never
Comes ON
The Bleed Line On One
Of The Gas Valves Is
Plugged
(Only For Honeywell V88 Gas Valves) Temporarily
Disconnect The 1/8” Bleed Line From Each Gas Valve. If
The Appliance Operates Properly, Clear Or Replace The
Bleed Lines.
The Ignition Module Is
Defective
Check The Wires To The Gas Valves For 24 VAC When
The Pilot Is Lit. If No Power Found, Replace The Ignition
Module
The Gas Valve Is
Defective
Check The Wires To The Gas Valves For 24 VAC When
The Pilot Is Lit. If The Valves Are Receiving Power But Not
Operating, Replace The Defective Valve
Gas Valve(s) Mis-Wired Check The Unit Wiring Against The Appropriate Wiring
Schematic And Correct Any Problems
Hot Spots On The
Jacket Or Flames
Rolling Out From The
Base Of The Unit
Heat Exchanger Fins
Clogged
Cover The Burner And Controls And Clean The Heat
Exchanger With A Wire Brush Or High Pressure Water.
Prevent Future Fouling Of The Heat Exchanger By
Preventing Condensation Or Removing Contaminants From
The Air Supply. Refer To MAINTENANCE & INSPECTION
Section Of This Manual. Replace Jacket & Insulation As
Required.
Inadequate Make-Up
(Combustion) Air
Make Sure The Combustion Make-Up Air Openings Meet
The Requirements Discussed In The INSTALLATION
Section Of This Manual.
Improper Vent
Installation
Make Sure The Exhaust Vent System Meets The
Requirements Discussed In The INSTALLATION Section Of
This Manual.
Clogged Vent Inspect Vent System For Flow Blockages. Clean & Remove
Blockages As Required
Manual Reset High
Temperature Switch
Keeps Tripping Off
Operating Aquastat Is
Not Set More Than
35
o
F Below The High
Temperature Limit
Switch Set Point (200
o
F
For Water Heaters)
(240
o
F For Boilers)
Make Sure The High Limit Switch Is Set To The Highest
Setting. Ensure The Operating Thermostat Is Set At Least
35
o
F Below The High Temperature Switch Set Point.