Economite RE32 Kurulum ve Servis Talimatları Kılavuzu - Sayfa 8

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Make sure the thermostat and operating controls are calling for heat. Defective wiring or loose connections can simulate the

component defects outlined below. Check associated wiring before replacing a component.

ELECTRICAL AND FLAME CHECKS MUST BE MADE IN THE ORDER LISTED.

Shut off the manual gas control to the gas utilization equipment.

Do not shut off the control switch to the pump or blower.

I. MOTOR WILL NOT RUN OR MOTOR RUNS IN

REPEATED CYCLES.

A. Confirm 120V between strip terminals 1 and 2 and

verify

the

circuit

between strip terminal 1 and burner chassis metal.

B. Check 24V* operating control circuit:

1. Between left strip terminal T and GND.

a. No voltage, transformer defective.

b. Very

low

voltage,*

transformer defective.

2. Between right strip terminal T and GND.

a. No voltage, circuit between T and T is open.

C. Confirm 120V between strip terminal 2 and motor relay

terminal 4:

1. No voltage, motor relay is defective.

2. Voltage present, motor is defective.

II. MOTOR RUNS CONTINUOUSLY, BUT NO FLAME.

A. Confirm

that

both

combination gas shut-off valves are in the ON

position.

B. If the pilot flame is not proven within 90 seconds, or if

the proof of flame is lost during the burner run and the

pilot is not re-established within 90 seconds, the

Electronic Control will lock out. To reset the control for

restart, de-energize the Electronic Control by setting

the operating control to OFF or thermostat below room

temperature for at least 60 seconds.

1. No pilot flame.

a. Check for 24V* between Electronic Control

terminal 24V and strip terminal GND.

voltage,

Blower

defective.

C. For each of the following tests, reset the Electronic

Control per step II.B.

DURING THE 90 SECOND TRIAL FOR IGNITION.

1. TURN MANUAL GAS COCK KNOB OFF. Check

for 24V* between Electronic Control terminal PV

and strip terminal GND.

Control is defective.

2. Check for 24V* between pilot valve terminal PV on the

combination valve and terminal strip GND. No

voltage, defective valve wire harness. Voltage

present, pilot valve operator is defective; replace

valve.

3. Connect manometer to pilot flame gas pressure tap.

TURN MANUAL GAS COCK KNOB ON. Separate

main valve wire at harness splice. During trial for pilot

ignition period, check gas pressure.

a. No pressure, confirm that both Main Manual

Shut-Off and combination gas shut-off valves

and

pilot

adjustment

Repeat step 3, and if still no pressure, pilot valve

operator is defective.

b. Pilot flame pressure is 3.0" to 4.0" W.C., continue

with step 4.

c. Refer to Standby Gas Pressure requirements in

Section IX and adjust or regulate the pilot gas

pressure as indicated.

4. Check for ignition spark (spark gap is approx. 5/32

±1/32) Since this is a capacitor discharge system,

observe closely when visually checking the spark as it

TROUBLE CHART

polarity

and

electrical

circuit

overloaded

Main

Manual

Shut-Off

Motor

Interlock

Switch

TESTS ARE VALID ONLY

No voltage, Electronic

screw

are

full

is faint and thread-like and may be overlooked in

bright light.

a. Between

terminal and strip terminal GND.

defective Electronic Control.

ground

b. Check for ignition spark at electrode tip.

spark, defective electrode or cable.

c. Check for gas flow at pilot tip. No flow, clogged

pilot spud or pilot tube.

III. FLAME ON ONLY DURING TRIAL FOR IGNITION

PERIOD.

A. With motor running and flame off, check line voltage

terminals for voltage as follows:

1. Between strip terminals 1 and 2 - 120V; voltage

OK.

2. Between strip terminals 1 and GND - 120V; ground

OK.

3. Between strip terminals 2 and GND - "0" V; no

backfeed OK.

and

B. Follow reset procedure as specified in step II.B.

1. Check sensor wire for continuity.

2. Separate main valve wire at harness splice. Connect

DC microamp meter in series with sensor wire and

Electronic Control. With pilot only burning, flame

signal should not be less than 2 microamps. Adjust

pilot flame gas pressure per Section IX to obtain

acceptable signal and note gas pressure and

resultant signal for future reference.

3. Reconnect separated main valve wire at harness.

After main flame comes on, flame signal should

increase. If signal does not increase, a rich flame is

indicated. Refer to Table 3 for approximate air shutter

and/or manifold gas pressure settings (see step VI).

C. IMPORTANT: If changes are made in the main

spud orifice size, manifold gas pressure or primary air

adjustment,

accordingly.

IV. PILOT FLAME ON BUT NO MAIN FLAME.

A. Check for 24V* between Electronic Control terminal

MV and strip terminal GND.

Control is defective.

B. Check for 24V* between main valve terminal MV on

combination valve and strip terminal GND. No voltage,

defective valve wire harness. Voltage present, main gas

valve operator is defective.

V. SHORT FLAME.

A. Low gas pressure.

B. Primary air adjustment open too far.

C. Main spud orifice too small.

VI. LONG HAZY FLAME.

A. High gas pressure.

B. Primary air adjustment closed too far.

open.

C. Dirty blower wheel.

D. Main spud orifice too large.

VII. GAS FAILS TO SHUT OFF.

A. Defective combination valve.

* Normal low voltage: Burner in standby - 24V min.

-8-

Electronic

Control

high

change

the

installation

No voltage, Electronic

Burner running (main gas valve

energized) - 21V min.

voltage

No spark,

data

tag