AquaStar 125B NGS Panduan Petunjuk Pemasangan dan Pengoperasian - Halaman 10

Jelajahi secara online atau unduh pdf Panduan Petunjuk Pemasangan dan Pengoperasian untuk Pemanas Air AquaStar 125B NGS. AquaStar 125B NGS 16 halaman. Automatic instantaneous type water heaters for use with natural and liquefied petroleum gas

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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. Contact a gas service person

to clean the remove and clean the burners.

Mineral Scale Build-up: AquaStars, tend not to

accumulate mineral buildup. If however, the water has a

high mineral content, periodic descaling may be

necessary. The heating coils should be flushed with a

descaling solution. Consult your dealer or Controlled

Energy for instructions.

TROUBLE SHOOTING

Introduction

The AquaStar 125 B "S" burners are activated 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 build-up in faucet aerators, or

shower heads; Uneven pressures between cold and hot.

(with single lever faucets) Plumbing cross overs. These

water flow related problems can cause the heater to deliver

less than its full output, or to fail to ignite or to shut down

completely.

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, remove incandescent particle tray

and unscrew the central screw located at the bottom of

the front cover. Pull main cover out toward you and lift up

and out.

PILOT LIGHT WILL NOT LIGHT

1. No gas to the AquaStar

A. Gas cock on gas line may not be open.

B. Gas valve button has not been pushed in on "PILOT"

position (

C. Gas regulator may be shut or damaged.

2. In-line AquaStar gas regulator jammed (usually on

LP gas)

Replace or unjam the regulator. Note: The regulator

furnished with the heater is designed for low gas pressure.

Excessive pressure will lock it up (propane only). Jamming

usually happens if the gas pressure between the gas tank

(propane) and the water heater's gas regulator has not

been reduced. See page 2 for recommended correct gas

pressure. To unjam a regulator, consult your gas supplier.

3. Pilot orifice clogged and/or air screen dirty, or pilot

gas filter is dirty.

Clogging of the pilot burner can be caused by dust and

any suspended matter contained in the ambient air.

Although the filters can lengthen the cleaning intervals,

they can never completely prevent such clogging. In

consequence the gas jet issuing from the pilot orifice is

reduced and or the air mixture is reduced. The pilot flame

is weak and thus can no longer heat the thermocouple

sufficiently. For cleaning purposes, the air filter screen is

pulled off, washed and blown out. The pilot orifice has

likewise to be cleaned or exchanged. Consult a gas service

person to clean the pilot.

4. Air in the Gas Line

Note: Normally this is a problem only at the time of initial

installation, after the pipes have been worked on, or after

a propane tank has been allowed to empty, or after the

heater has been shut down for a long time.

Bleed all the air trapped in the gas line. Because of the

very small pilot orifice (especially on LP gas models),

bleeding out all the air could take several minutes. Depress

the pilot button ( ) and depress this button until all the air

has escaped, and the gas has arrived. During this process,

press repeatedely on the piezo ignition button until the pilot

flame has ignited.

PILOT LIGHTS BUT FLAME GOES OUT WHEN

BUTTON IS RELEASED

1. Pilot push button was not pushed in far enough or

was not held in long enough

Depress the pilot button. Hold it pushed in for at least 15

seconds to give time for the pilot flame to properly heat

the tip of the thermocouple.

2. Pilot flame improperly aimed or is too weak so it is

not properly heating the tip of the thermocouple.

The Pilot flame should be a sharp blue flame and aimed

at the tip of the thermocouple so that it envelops 10 mm

(3/8 ") of the thermocouple tip. Pilot flame has to be properly

aimed at the thermocouple. See Fig 8.

3. Poor

thermocouple

electromagnet

Note: Electromagnet is part #8707201094 located on the

right side of the gas valve behind the piezo pushbutton

assembly. Check the tightness of the thermocouple

connection nut at the electromagnet: The Electro-magnet

connection is a large aluminum 17mm hex head nut. The

thermocouple end is a 5 mm brass nut which screws into

the 17 mm nut. Tighten the thermocouple nut snugly but

not too tight.

4. Poor circuit connections at the ECO. (Energy Cut-

Off overheat protection)

Oxidation or looseness of the ECO terminal connections

can result in millivolt current loss through the thermocouple

safety circuit. Clean terminals with very fine sand paper or

an eraser and reconnect ECO leads.

5. Faulty ECO (part #8707206017)

If cleaning the terminals attached to the ECO did not fix

the problem, connect a jumper wire between the two wires

and try to relight the pilot. If the pilot flame now remains

on, replace the ECO. If the flame still goes out when the

button is released, the ECO is not defective. Go to next

step.

6. Faulty thermocouple (part #8747202078) or

electromagnet) Unless these 2 parts are at least 8

to 10 years old, it is very unlikely that they are faulty.

Before testing, reconfirm that #2 is absolutely

correct, and that all connections are clean and tight.

connection

the