PILOT ORIFICE
Fig. 13 - Pilot burner with pilot orifice
Main Burner Flames: The main burner flames should be blue, with a more intense blue cone in the center core. Yellow flames could be a sign of wrong size gas orifices or dirty burners, or a blockage on the heat exchangers fins. If some burners have yellow flames while others have good flames, it is likely that dust, lint or spider webs have partially clogged the burner venturis. To clean the burners, contact a gas service person.
Mineral Scale
Consult your dealer or service person.
TROUBLE SHOOTING (see maintenance table)
Introduction
The AquaStar 125FX pilot and burners are ignited by a water flow valve. Numerous water related problems can cause this water valve to malfunction such as: Insufficient water flow volume to activate the burners at its minimum flow requirement; Dirt in the water flow valve causing it to malfunction; Sediment
Problems are stated in upper case, bold face. Most common causes for the problems follow in order of likelihood. The suggested solutions require that the cover be taken off. To do this, pull off the temperature knob and unscrew and remove the temperature knob collar. Pull main cover out toward you and lift up and out.
NO SPARK AT THE PILOT
1. On/Off switch is not ”On” (Position “ ”).
The On/Off switch is located behind the flipdown cover plate on the front panel strip. See fig. 10.
2. Bad electrical connections.
Be certain that all electrical connections are clean, tight, and free of any moisture.
3. Water flow is not sufficient to activate heater.
Water flow rate at faucet is below minimum flow needed to activate heater. When temperature adjustment knob is turned all the way clockwise, the AquaStar model 125FX requires 1/2 gallon per minute flow to activate the heater. As a reference, this is a flow which would fill a quart jar in 30 seconds. If the temperature adjustment knob is turned fully counterclockwise, a flow rate of 1.1 gallons/minute is required to activate the heater.
4. Bad fuse
Check the viability of the fuse (see Fig 9 (#9) for location of fuse). Replace if necessary.
5. Water inlet filter is clogged
Water flow is restricted, preventing flow needed to activate heater. Clean water inlet filter screen.
6. Cross over in water lines
To confirm there is no
7. Microswitch needs to be adjusted or replaced.
If you do not hear a click when a tap is opened, the microswitch needs to be adjusted. See Fig. 15 (#11) for location and see Fig. 14 for adjustment. The microswitch may need to be replaced.
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| Adjusting screw | |||
| G871 212 |
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| Fig. 14 - microswitch adjustment |
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| Pilot does not spark with |
| Pilot | always | sparks | |
| water flow |
| without water flow | |||
1 | Close water tap | 1 | Close water tap |
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2 | Remove screw cap and | 2 | Screw | in | adjusting screw | |
| unscrew till sparking starts |
| until it stops sparking | |||
3 | Screw in turning one and a | 3 | Continue | to | screw in | |
| half turns |
| turning one and a half | |||
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| turns more |
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8.Cold incoming water connection made to wrong side of heater
Make sure cold water inlet connection is on the right side when you are facing the AquaStar.
9.Water valve parts may be dirty or components damaged First check that venturi is free of dirt particles. Water valve
and component parts must be totally free of dirt.
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