Table of Contents
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Models
FPS 40 and 50
Series 226-227
FPSE 40 and 50
Series 226E
FPD 40 and 50
Series 226-227
ruc Wc ~~D~w
Prepared by the
Technical
Information Dept.
Irving, Texas
F PS 75
Series 230-233
WATER
PRODUCTS
COMPANY
A DIVISION OF A.O. SMITH CORPORATION
00
Printed in the U.S.A. 596 4575
Part No. TC-O34
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Chapters
Table of Contents
Troubleshooting
Related Manuals for A.O. Smith FPS 75
Summary of Contents for A.O. Smith FPS 75
- Page 1 : --' :::=::;- ( ;,,' ~~~. =~~~ ruc Wc ~~D~w WATER PRODUCTS COMPANY A DIVISION OF A.O. SMITH CORPORATION 0-'1 ~;;;;~~, Models FPS 40 and 50 Series 226-227 FPSE 40 and 50 Series 226E FPD 40 and 50 Series 226-227...
- Page 2 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK WORKBOOK INTRODUCTION @1995 Technical Information A.D. Smith Irvino. Texas Water Products Co.
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Page 3: Table Of Contents
Sequence of Operation Wiring Diagram Troubleshooting Index Parts List FPSE & FPD 40 -50 Sequence of Operation Wiring Diagram Troubleshooting Index Parts List FPS 75 Sequence of Operation Wiring Diagram Troubleshooting Parts List Part Infom1ation Service General Q & A PAGE... -
Page 4: Choosing The Best Water Heater
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK CHOOSING THE BEST WATER HEATER @1995 A.D. Technical Information Smith Irving, Texas Water Products Co. -
Page 5: When To Choose The Fpse
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK CHOOSING THE BEST WATER HEATER cant. -
Page 6: When To Choose The Fpd
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK CHOOSING THE BEST WATER HEATER cant. -
Page 7: Venting Installation
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK VENTING INSTALLATION... -
Page 8: Exterior Clearances Fps, Fpse
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK Exterior installation clearance requirements are crucial and must be met to ensure Exterior compliance with all safety and code requirements. Clearances: met, do not unpack the heater. FPSE All exterior clearance requirements for the FPS and FPSE are measured from the vent termination. -
Page 9: Exterior Clearances Fpd
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK Exterior Exterior installation clearance requirements are crucial and must be met to ensure Clearances: compliance with all safety and code requirements. met, do not unpack the heater. All exterior clearance requirements for the FPO are measured from the vent termination. -
Page 10: Condensation
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK VENTING INSTAllATION cant. -
Page 11: Sealing The Vent
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK VENTING INSTAllATION cant. -
Page 12: Horizontal Length Calc. Fps, Fpse
VENTING INSTAllATION cant. -
Page 13: Vertical Length Calc. Fps, Fpse
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK VENTING INSTAllATION cant. -
Page 14: Horizontal Length Calc. Fpd
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK INSTAllATION cant. VENTING... -
Page 15: Vertical Length Calc. Fpd
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK VENTING INSTALLATION cant. -
Page 16: Down Length Calc. Fpd
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK VENTING INSTAllATION cant... -
Page 17: Air For Combustion
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK Checking for On initial start up, check for the correct draft on the Power Shot. To check the Draft draft, place a smoke stick directly in front of the inlet air damper while the heater is firing. -
Page 18: Additional Problems
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK CONDITION Burnt gas odor when heater is operatinq The majority of the complaints associated with the operation of the will likely be a direct result of improper venting. If the customer complains of smelling burnt gas around the water heater, first check for vent gases that may be leaking from the PVC joints or around the area between the blower assembly and water heater. - Page 19 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK CONDITION Excessive heat build-up in PVC venting Intermittent fan cycling without burner operation (Propane Only) A malfunctioning vent damper may also cause excessive heat buildup in the PVC vent piping unable to free the damper, replace the entire combustion control tee. If blower does not run when the main burner fires, replace the control for correct size.
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Page 20: Negative Pressure
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK Diagnosing pilot outage complaints requires an examination of the environment in Negative Pressure which the heater is installed. Mechanical vent fans are the chief cause of negative pressure. If the house is too tight, more air will be exhausted from the structure than is being brought in from the outside, resulting in a negative pressure condition. -
Page 21: Make-Up Air
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK AIR FOR COMBUSTION cont. A.D. Smith Technical Information Water Products Co Irving, Texas... -
Page 22: Sequence Of Operation
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION... -
Page 23: Wiring Diagram
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cant. -A~I DISCONNECT FROM ELECTHICAL SUPPLY BEFORE SERVICING UNIT. REPLACE ALL DOORS AND PANELS BEFORE OPERATING HEATER. @1995 A.D. Smith Water Products Co "" 115~LT POWER SOURCE CONNECTOR, ""... -
Page 24: Troubleshooting Index
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cant. @1995 Technical Information A.D. Smith Water Products Co. Irving, Texas... - Page 25 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cant Trouble- shooting cont PRELIMINARY CHECKS 1. Gas valve knob is in ON position 2. Pilot is burning 3. 120 VAG is supplied to heater. 4. Thermostat 5.
- Page 26 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cant. Trouble- shooting cont.
- Page 27 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cant. @1995 Technical Information A.D. Smith Water Products Co. Irving, Texas...
- Page 28 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cont. BLOWER DOES NOT RUN cant. Trouble- shooting cont. RESULTS the fan does not run, the fan does run, @1995 A.D. Smith Water Products Co. then: replace the fan assembly. go to Step 2.
- Page 29 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cant. BLOWER DOES NOT RUN cont. Trouble- shooting cont. RESULTS the fan does not run, the fan does run then' replace the cable go to Step 3.
- Page 30 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cant. BLOWER DOES NOT RUN cant. Trouble- shooting cont RESULTS the fan does not run, the fan does run, then replace the harness replace the gas pressure switch...
- Page 31 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cont. @1995 A.D. Smith Technical Information Water Products Co IrvinQ, Texas...
- Page 32 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cant BLOWER RUNS CONSTANTLY (No call for heat) cont Trouble- shooting cont RESULTS the fan continues to run, the fan stops, @1995 A.D. Smith Water Products Co. then replace the fan assembly go to Step 2...
- Page 33 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cant. BLOWER RUNS CaNST ANTL Y (No call for heat) cant. Trouble- shooting cont. RESULTS the fan continues to run, the fan stops, then: replace the cable. go to Step 3.
- Page 34 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION Trouble- BLOWER RUNS CONSTANTLY (No call for heat) cant. shooting cont. RESULTS the fan continues to run, the fan stops, cant. then: replace the harness replace the gas pressure switch.
- Page 35 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cant @1995 Technical Information A.D. Smith Irving, Texas Water Products Co.
- Page 36 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION BLOWER RUNS CONSTANTLY (No main burner) cont. Trouble- shooting cont. RESULTS the meter does not read 120 VAG, the meter does read 120 VAG, @1995 A.D. Smith Water Products Co cant then...
- Page 37 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION BLOWER RUNS CONSTANTLY (No main burner) cant. Trouble- shooting cont. RESULTS the meter does not read 120 VAG, the meter does read 120 VAG, @1995 A.D. Smith Water Products Co.
- Page 38 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION BLOWER RUNS CONSTANTLY (No main burner) cont. Trouble- shooting cont. RESULTS the meter does not read 120 V AC the meter does read 120 V AC, cant. then: replace the harness replace the solenoid.
- Page 39 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION cont Trouble- PILOT PROBLEMS shooting cont. The following are possible causes of pilot problems: 1. Incorrect pilot position; the pilot should engulf the tip of the thermocouple 3\8" to 1\2", 2.
- Page 40 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 SERVICE AND OPERATION MAIN BURNER PROBLEMS Trouble- shooting cont. The following are possible causes of main burner problems: 1. Unlevel burner will cause yellow flames 2. Burning and the orifice indicates main gas valve may not be fully closing.
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Page 41: Fps 40
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 40 and 50 PARTS LIST PSD-1-263/b RESIDENTIAL WATER HEATER PARTS LIST MODELS FPS-40 AND 50 SERIES 226/227 L;'~ @).,~ ffi]'G;J WATER PRODUCTS COMPANY 5621 W. 115TH STR~~T, ALSIP, ILLINOl5 60462/1-600-433-2545 April 1994 @1995 A.D. - Page 42 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK !!!!!! ftpl!Of1 A.,ode Bai!le, Hanger B3111e, flue.. Assembly Blower. BurnElr Assembly Prooal'& eur~~r Assftmbly Nalu!'31 8J'r&r He3d. 8u'rlrr with P,io! ilnc!udlng I:err Propane Na!ura! Gas. Pi:ol, Natural....- BJrr!er Bu'ner PliOl, Propane Bi9&d P,lol, Na!l;rai Only...
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Page 43: Sequence Of Operation
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION FPD 40 and 50 SERVICE AND OPERATION @1995 Technical Information A.D. Smith Irving, Texas W~t~r Products Co... -
Page 44: Wiring Diagram
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK @1995 Technical Information A.D. Smith Water Products Co. Irving, Texas... -
Page 45: Subject
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cont FPD 40 and 50 SERVICE AND OPERATION cont. Subject I Preliminary Checks Blower does not run Blower runs constantly (No call for heat) Blower runs constantly (Calling for heat, no pilot) Blower runs constantly (Calling for heat, pilot is lit, no... - Page 46 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cont. FPD 40 and 50 SERVICE AND OPERATION cont. @1995 A.D. Smith Technical Information Irving, Texas Water Products Co.
- Page 47 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cont. FPD 40 and 50 SERVICE AND OPERATION cont.
- Page 48 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION FPD 40 and 50 SERVICE AND OPERATION cant. Trouble- BLOWER DOES shooting cont. RESULTS the meter does not read 120 VAG, the meter does read 120 V AC, @1995 A.D.
- Page 49 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION FPD 40 and 50 SERVICE AND OPERATION BLOWER DOES NOT RUN cant. Trouble- shooting cont RESULTS the meter does not read 120 VAG, the meter does read 120 VAG, @1995 A.D.
- Page 50 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION FPD 40 and 50 SERVICE AND OPERATION Trouble- BLOWER DOES NOT RUN cont. shooting cont. RESULTS the meter does not read 120 V AC the meter does read 120 VAG, cont.
- Page 51 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION FPD 40 and 50 SERVICE AND OPERATION BLOWER DOES NOT RUN cant. Trouble- shooting cont. @1995 A.D. Smith Water Products Co. cant. cant. Technical Information Irving, Texas...
- Page 52 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION FPD 40 and 50 SERVICE AND OPERATION cont. @1995 A.D. Smith Technical Information Water Products Co. Irving, Texas...
- Page 53 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cant. FPD 40 and 50 SERVICE AND OPERATION cant. BLOWER RUNS CONSTANTLY (No call for heat) cont. Trouble- shooting cont. RESULTS the blower continues to run, the blower stops, then replace the blower.
- Page 54 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION FPD 40 and 50 SERVICE AND OPERATION cant. BLOWER RUNS CONSTANTLY (No call for heat) cant. Trouble- shooting cont Rt.~\}'-\~ the blower continues to run the blower stops cant.
- Page 55 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION FPD 40 and 50 SERVICE AND OPERATION cont. Trouble- BLOWER RUNS CONSTANTLY shooting (CAlliNG FOR HEAT, NO PilOT) cont. First make the following tests until cause of the failure is determined: 1.
- Page 56 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION FPD 40 and 50 SERVICE AND OPERATION cant. BLOWER RUNS Trouble- shooting cont. RESULTS the meter does not read 24 V AC the meter does read 24 V AC, CONSTANTLY (Calling for heat,...
- Page 57 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION FPD 40 and 50 SERVICE AND OPERATION cant. Trouble- BLOWER RUNS shooting cont. RESULTS the meter does not read 24 VAG, the meter does read 24 VAG, CONSTANTLY (Calling for heat,...
- Page 58 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cant. FPD 40 and 50 SERVICE AND OPERATION cant. Trouble- shooting cont...
- Page 59 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cont. FPD 40 and 50 SERVICE AND OPERATION BLOWER RUNS CONSTANTLY (Calling for heat, no pilot) cant Trouble- shooting cont RESULTS the meter does not read 24 V AC, the meter does read 24 VAG, @1995 A.D.
- Page 60 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cant. FPD 40 and 50 SERVICE AND OPERATION cant. BLOWER RUNS CONSTANTLY (Calling for heat, no pilot) cant Trouble- shooting cont. @1995 Technical Information A.D. Smith Irving, Texas Water Products Co...
- Page 61 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION FPD 40 and 50 SERVICE AND OPERATION Trouble- BLOWER RUNS CONSTANTLY (Calling for heat, no pilot) cant. shooting cont. RESULTS the meter does not read continuity, the meter does read continuity, cont.
- Page 62 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cont. FPD 40 and 50 SERVICE AND OPERATION cont.
- Page 63 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION FPD 40 and 50 SERVICE AND OPERATION cant. Trouble- BLOWER RUNS shooting cont. cant. RESULTS the meter does not read 24 VAG, the meter does read 24 VAG, A.D.
- Page 64 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION FPD 40 and 50 SERVICE AND OPERATION cant. Trouble- BLOWER RUNS shooting cont. cont. RESULTS the meter does not read continuity, the meter does read continuity, CONSTANTLY (Calling for heat, then...
- Page 65 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION cant. FPD 40 and 50 SERVICE AND OPERATION cant. PILOT PROBLEMS Trouble- shooting cont. The following are possible causes of pilot problems: 1. An open E.C.O. (high limit) will not allow the heater to relight. (See page 49) 2.
- Page 66 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 SERVICE AND OPERATION FPD 40 and 50 SERVICE AND OPERATION Trouble- MAIN BURNER PROBLEMS shooting cont. The following are possible causes of main burner problems: 1. Unlevel burner will cause yellow flames. 2.
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Page 67: Parts List
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPSE 40 and 50 PARTS LIST FPD 40 and 50 PARTS LIST ill.. @J.. ~~ WATER PROOUCTS COMPANY 582' w. , '5TH 8TR~~T. ~l81". IllINOIS 8O.'2rl-800-433-25.5 JUly 1995 P,,'NTED'" V.5.". @1995 Technical Information A.D. Smith Irving, Texas Water Products Co. - Page 68 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK De~t,pll()tI . . . A"!J'B Doot L&" A.-ode BaH'e ..al'g.f ~IO_f Assembly aO) Top. LOW@f A" Su~1y ..aO) Boll""'. Lower Aof ~y . . . tlracket, Ga. Valve . . . Bracket Gas Valve.
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Page 69: Sequence Of Operation
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION @1995 Technical Information A.D. Smith Irving, Texas Water Products Co. -
Page 70: Wiring Diagram
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cant. @1995 A.D. Smith Technical Information Water Products Co Irving, Texas... -
Page 71: Troubleshooting
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cont. Subject Preliminary Checks Blower does not run Blower runs constantly (No call for heat) Blower runs constantly (Calling for heat, no pilot) Blower runs constantly (Calling for heat, pilot is lit,... -
Page 72: Preliminary Checks
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cant. PRELIMINARY CHECKS Trouble- shooting cont. A.D. Smith Water Products Co. Technical Information Irving, Texas... - Page 73 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cant,...
- Page 74 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION BLOWER DOES NOT RUN cont. Trouble- shooting cont RESULTS the meter does not read 120 VAG, the meter does read 120 VAG, cant. then: replace the blower assembly. go to Step 2...
- Page 75 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cant. BLOWER DOES NOT RUN cant. Trouble- shooting cont. @1995 A.D. Smith Technical Information Water Products Co. Irvina. Texas...
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Page 76: Fps
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION BLOWER DOES NOT RUN cant. Trouble- shooting cont. RESULTS the meter does not read 120 VAG, the meter does read 120 VAG, @1995 A.D. Smith Water Products Co. cant. - Page 77 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cont. PRELIMINARY CHECKS EXCEPTIONS 4. Heater should be calling for heat. @1995 A.D. Smith Technical Information Water Products Co. Irving, Texas...
- Page 78 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cant. BLOWER RUNS CONSTANTLY (No call for heat) cont Trouble- shooting cont. RESULTS the blower continues to run the blower stops, then replace the blower go to Step 2.
- Page 79 FPS/FPSE/FPD FPS 75 SERVICE AND OPERATION Trouble- BLOWER RUNS CONSTANTLY (No call for heat) cant. shooting cont. RESULTS the blower continues to run, the blower stops, TECHNICAL TRAINING AND SERVICE WORKBOOK then" replace the cable see preliminary checks. cant.
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Page 80: Blower Runs Constantly .:>Age
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cant. Trouble- BLOWER RUNS CONSTANTLY shooting (CAlliNG FOR HEAT, NO PilOT) cont. First make the following tests until cause of the failure is determined: Air Pressure Switch Test Vent High Limit Test... - Page 81 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION BLOWER RUNS CONSTANTLY (Calling for heat, no pilot) cant. Trouble- shooting cont. RESULTS the meter does not read 24 VAG the meter does read 24 VAG, Load=Wire carrying current onto high limit...
- Page 82 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION BLOWER RUNS CONSTANTLY (Calling for heat, no pilot) cont Trouble- shooting cont. RESULTS the meter does not read 24 VAG, the meter does read 24 VAG, Load=Wire carrying current onto connector then: replace the vent high limit.
- Page 83 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cont. Trouble- BLOWER RUNS CONSTANTLY (Calling for heat, no pilot) cont. shooting cont. RESULTS the meter does not read 24 V AC, the meter does read 24 VAG, @1995 A.D.
- Page 84 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION BLOWER RUNS CONSTANTLY (Calling for heat, no pilot) cant. Trouble- shooting cont. RESULTS the meter does not read 24 VAG the meter does read 24 VAG, @1995 A.D. Smith Water Products Co cant.
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Page 85: Blower Runs Constantly
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cont. BLOWER RUNS CONSTANTLY (Calling for heat, no pilot) cont. Trouble- shooting cont. RESULTS the meter does not read 24 VAG, the meter does read 24 VAG, A.D. Smith Water Products Co. - Page 86 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cant. BLOWER RUNS CONSTANTL Y'(Calling for heat, no pilot) cant. Trouble- shooting cont. RESULTS the meter does not read 120 VAG, the meter does read 120 VAG, then: replace wire.
- Page 87 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION BLOWER RUNS CONSTANTLY (Calling for heat, no pilot) cant. Trouble- shooting cont. RESULTS the meter does not read 24 V AC, the meter does read 24 VAG, @1995 A.D. Smith Water Products Co.
- Page 88 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cont. BLOWER RUNS CONSTANTLY (Calling for heat, no pilot) cant. T rouble- shooting cont.
- Page 89 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cant. Trouble- BLOWER RUNS CONSTANTLY (Calling for heat, no pilot) cant. shooting cont.
- Page 90 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cant. @1995 Technical A.D. Smith Information Water Products Co. Irving, Texas...
- Page 91 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION BLOWER RUNS CONSTANTLY (Calling for heat, pilot is lit, no main burner) Trouble- shooting cont. cant. RESULTS the meter does not read 24 VAG, the meter does read 24 VAG, cant.
- Page 92 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cant. BLOWER RUNS CONSTANTLY (Calling for heat, pilot is lit, no main burner) Trouble- shooting cont cont. RESULTS the meter does not read continuity, the meter does read continuity, then: replace the main valve.
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Page 93: Pilot Problems
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cant. Trouble- PilOT PROBLEMS shooting cont. The following are possible causes of pilot problems: 1. An open E.C.O. (high limit) will not allow the heater to relight. (See page 84). -
Page 94: Main Burner Problems
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS 75 SERVICE AND OPERATION cant. Trouble- MAIN BURNER PROBLEMS shooting cont. The following are possible causes of main burner problems: 1. Unlevel burner will cause yellow flames. 2. Burning at the orifice indicates main gas valve may not be fully closing. -
Page 95: Parts List
5621 W.115TH STREET, ALSIP, ILUNOIS 604821 1-800-433-2545 PRINTeD" U.S.A. @1995 A.D. Smith Water Products Co FPS 75 PARTS LIST RESIDENI'IAL -(-! I"i::"'- A.O. SMITH WATER PRODUCTS CO., INC. WATER HB.4TER PAR7S LIST MODELS FP5-75 SERIES: 230/231 232/233 AEUEF VALVE 3511... - Page 96 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK SERIES 230/231 THRU 232/233 Item Description 1 Anode Baffle Baffle, Flue ...,..",.",.,."."."... Flue Restrictor Blower Blower Assembly Blower Wiring Harness Fan Housing 7 Bracket, Gas Valve Burner Air Shutter Lock Nut Main Burner Main Burner Tube. Nat. Main Burner Tube.
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Page 97: Part Infom1Ation
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK CONTROL MODELS FPS40-50 FPSE & FPD40 - 50 FPS75 Air Pressure FPS40-50 FPSE & FPD40 - 50 Switch FPS75 FPS40-50 Thermostat FPSE & FPD40 - 50 FPS75 High Limit FPS40-50 FPSE & FPD40 - 50 FPS75 FPS40-50 Gas Valve... -
Page 98: Service Checklist
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK PROPER SEQUENCE OF OPERATION A. FPS40 - 50 During standby is blower off? On a call for heat does gas valve open? Does gas pressure switch close? Does the blower come on? If so, does the air pressure make? Does the solenoid open? Does main burner ignite? Does the thermostat satisfy? - Page 99 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK SAFETY VII. A. Gas flame Does pilot prove before main burner ignites? Does damper blade fully open before ignition sequence occurs? Is burner cover plate in place? Is burner floor shield in place? Does liD lockout occur after 30 sec. trial for ignition? (Propane models only) B.
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Page 100: General Q & A
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK FPS MODELS What is the CFM of the blower? Maximum of 60 CFM Will the blower move more air through the unit than conventional venting and thereby cause less heat to be transferred into the water? No. - Page 101 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK Is there a maximum distance that the vent cap can terminate from the exterior wall? No, as long as the overall equivalent length is not exceeded. We would advise that the exterior piping have a slight negative slope and be properly supported and insulated (The colder the vent piping, the more condensation will be experienced).
- Page 102 FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK If the inlet air damper does not open to provide dilution air, the PVC vent will sag due to excessive temperature. Propane units do not have a bypass in the gas solenoid valve. This may result in occasional cycling stand by between calls for heat.
- Page 103 &c @)c 0[fiJDcu:'~ A DIVISION OF A.O. SMITH CORPORATION FOR ADDITIONAL INFORMATION CONTACT A.O. SMITH TECHNICAL INFORMATION DEPARTMENT 1-800-527 -1953...