P/N 475114 Rev. F 8/2020 MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide
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MASTERTEMP 125 HEATER REPLACEMENT PARTS
REPAIR PARTS – ELECTRICAL SYSTEM
Model
Key Part
125 (NA/LP)
No. Description Qty.
1Heater Display Cover 1 42002-0035Z
2Igniter Bracket 1 42001-0030S
3 Igniter/Igniter Gasket Kit Incl. Key Nos. 3 and 4) 1 77707-0054
4Igniter Gasket 1 42001-0066S
5 Automatic Gas Shutoff Switch (AGS) 1 474368Z
6High Limit Switch (55°C) 1 474369Z
7 Thermistor 1 42001-0053S
8Terminal Board 1
1
1
1
1
1
42001-0056S
9 Fireman’s Switch Fuse (1.25A, 1-1/4") 32850-0099
10 Ignition Control Module 1 474103Z
11 Transformer, 120/240V 1 42001-0107S
12 Air Flow Switch 42001-0061S
13 Control Board Kit (NA, LP Series) 1 42002-0007S
• Heater Wiring Harness - 120/240V 1 474163Z
• 120/240 Volt Plug Kit 42001-0105S
14 Heater, Top 42002-0034Z
15 Membrane Pad (NA, LP Series) 472610Z
16 Stack Flue Sensor 1 42002-0024S
•Not available separately.
*Kit parts not available separately.
a
7a Inlet Temperature Control Switch (45°C) 1 475147Z
Section 5. Replacement Parts