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TABLE 4

 

Ignition Control 103217-02 

RED LED

Flash Code

2

Diagnostic Codes / Status of Furnace

Off

No power to control or board fault detected

Heartbeat

1

Normal Operation - Idle, Continuous Fan, Cool

1

Reverse Line Voltage Polarity

2

Improper Earth Ground

3

Burner failed to light, or lost flame during heat demand

4

Low Flame Signal - check flame sensor

5

Watchguard - burner failed to light, exceeded maximum number of retries or recycles.

6

Ignitor Circuit Failure - not available on this control

7

Primary or Secondary Limit Open or  Watchguard Mode - Limit Switch Open longer than 3 minutes

8

Rollout Switch Open

9

Pressure Switch failed to close or opened during heat demand

10

Watchguard - Pressure Switch opened 5 times during one heat demand

11

Pressure Switch stuck closed prior to activation of combustion air inducer

12

Flame Sensed without gas valve energized

13

Low Line Voltage

Notes

Note 1

A ”Heartbeat” is indicated by a ”Slow Flash” - 1 sec on 1 sec off, repeating

Note 2

Error codes are indicated by a “rapid flash” - the LED flashes X times at ½ second on ½ second off, remains off for 3

seconds then repeats.

Note3

Last 10 error codes are stored in memory including when power is shut off to the unit. - To recall, press and release button,

most recent will be displayed first, LED off for 3 sec, then next error code is displayed, etc.   To clear error codes, depress

and hold button longer than 5 seconds.

 

Содержание ML180DF045E36A

Страница 1: ...LP Propane operation ML180DFE model units are equipped with a hot surface ignition system and a constant torque ECM motor The motor is programmed to provide constant torque at each of the five select...

Страница 2: ...Utilization Efficiency based on DOE test procedures and according to FTC labeling regulations Isolated combustion system rating for non weatherized furnaces SPECIFICATIONS Gas Heating Performance Mode...

Страница 3: ...s cfm Watts cfm Watts 0 00 1430 285 1215 180 1035 120 995 110 930 100 0 10 1400 285 1175 185 995 130 885 100 850 90 0 20 1375 300 1145 200 950 140 840 110 725 85 0 30 1335 315 1120 210 915 145 790 115...

Страница 4: ...1195 130 0 10 1725 390 1495 270 1390 220 1320 195 1145 140 0 20 1695 405 1470 285 1340 235 1280 210 1105 145 0 30 1660 415 1425 300 1290 240 1225 215 1040 160 0 40 1615 430 1395 310 1250 255 1185 230...

Страница 5: ...Box includes integrated control interlock switch and transformer Gas Valve Burner Box includes sensor ignitor and rollout switches Combustion Air Inducer Blower Access Panel Heating Compartment Acces...

Страница 6: ...t if repair is attempted The hot surface ignition control system consisting of an integrated control figure 3 with control terminal designa tions in tables 1 2 and 3 sensor and ignitor figure 6 The in...

Страница 7: ...lve Out TABLE 3 1 4 Quick Connect Terminals 120HUM Humidifier 120VAC LINE 120VAC XFMR Transformer 120VAC CIRC Indoor blower 120VAC EAC Indoor air quality accessory 120VAC NEUTRALS Common 120VAC HUM24...

Страница 8: ...Switch Open 9 Pressure Switch failed to close or opened during heat demand 10 Watchguard Pressure Switch opened 5 times during one heat demand 11 Pressure Switch stuck closed prior to activation of c...

Страница 9: ...llout Switch Open 9 Pressure Switch failed to close or opened during heat demand 10 Watchguard Pressure Switch opened 5 times during one heat demand 11 Pressure Switch stuck closed prior to activation...

Страница 10: ...s2 Pressure Switch failed to close or opened during heat demand inducer on 10 Flashes2 Watchguard Pressure switch opened 5 times during a single heating demand 11 Flashes2 Pressure switch stuck closed...

Страница 11: ...zed Longer delay times allow for lower air tempera ture shorter delay times allow for higher air temperature See figure 5 Cooling Fan On Time The fan on time is 2 seconds and is not adjustable Cooling...

Страница 12: ...thin three minutes or SureLight control will go into Watchguard for one hour The switch is factory set and cannot be adjusted The switch may have a different setpoint for each unit model number If lim...

Страница 13: ...ire from Integrated Control and Connect Alligator Clip to Flame Sensor Lead Flame Sensor Terminal Remove Sensor Wire from Integrated Control and Connect Alligator Clip to Terminal on Control DIGITAL M...

Страница 14: ...needed If the reading on the meter is not correct 0 or infinity then a second test is needed Test 2 Check ignitor for correct resistance Seperate the 2 pin jack plug near the manifold and check resist...

Страница 15: ...ducer Pressure Switch S18 Units are equipped with a combustion air pressure switch located on the combustion air inducer orifice bracket The switch is connected to the combustion air inducer housing b...

Страница 16: ...resent in tests 1 and 2 and motor is not operating properly replace motor The motor is not field repairable If replacing the indoor blower motor or blower wheel is necessary placement is critical The...

Страница 17: ...peed tap used for continuous fan 1 2 3 4 or 5 on input plug P49 If 24 volts is not present problem may be up stream of plug P49 Proceed to test 4 Multi Meter set to VAC 12 0 12 0 24 Multi Meter set to...

Страница 18: ...ximately the same resistance within an ohm 3 Check to see if the blower wheel spins freely Motor Test FIGURE 16 TABLE 9 Scale Measurement range in words ohms 2 M two megohm two million ohms 0 2 000 00...

Страница 19: ...to be performed 3 Remove the upper access panel 4 Move gas valve switch to OFF position Do not force See figure 18 5 Replace the upper access panel B Safety or Emergency Shutdown Disconnect main powe...

Страница 20: ...itting Connect to a test gauge to measure supply pressure 2 Start unit and allow 5 minutes for unit to reach steady state 3 After allowing unit to stabilize for 5 minutes record supply pressure and co...

Страница 21: ...opane 10 0 10 0 10 0 11 0 13 0 TABLE 13 Pressure Switch and Gas Conversion Kits at all Altitudes Model Input Size High Altitude Pressure Switch Kit High Altitude Natuarl Gas Orifice Kit LP Propane Ori...

Страница 22: ...132 Vac NOTE Figures 21 and 22 are typical ignition control illustrations CHECK VOLTAGE BETWEEN LINE NEUTRAL AND LOW VOLTAGE C TERMINAL FIGURE 20 TABLE 14 Furnace Status Measurement VAC Expected Maxi...

Страница 23: ...5 W C For cooling speed external static pressure drop must not be more than 0 8 W C 4 Seal the hole when the check is complete EXTERNAL STATIC PRESSURE Supply Duct Static Return Duct Static Total Duct...

Страница 24: ...rovide combustion air 10 Inspect the furnace venting system to make sure it is in place structurally sound and without holes corrosion or blockage Vent system must be free and clear of obstructions an...

Страница 25: ...manifold assembly to the vestibule panel and remove the assembly from the unit 7 Remove screws from both sides top and bottom of vestibule panel 8 Remove heat exchanger It may be necessary to spread c...

Страница 26: ...burner box cover 15 Reconnect all wires 16 Reconnect top cap and vent pipe to combustion air inducer outlet 17 Reconnect gas supply piping 18 Turn on power and gas supply to unit 19 Set thermostat and...

Страница 27: ...e found to be closed Call for heat can continue 5 A92 integrated control energizes B6 combustion air inducer S18 combustion air pressure switch closes Once S18 closes a 15 second pre purge follows 6 A...

Страница 28: ...OFF COMBUSTION AIR INDUCER ON INDOOR BLOWER ON HEATING SPEED LED FLASHES CODE 11 PRESSURE SWITCH CLOSED GAS VALVE OFF COMBUSTION AIR INDUCER OFF INDOOR BLOWER OFF WITH DELAY Sequence holds until press...

Страница 29: ...NCE FOUR TIMES FLAME SIGNAL 1 5 MICROAMPS OR GREATER YES YES YES ROLLOUT SWITCH CLOSED LED FLASHES CODE 8 ROLLOT SWITCH OPEN GAS VALVE POWER OFF COMBUSTION AIR INDUCER POWER ON INDOOR BLOWER ON SEQUEN...

Страница 30: ...SLOW FLASH RATE REMAINS UNCHANGED THROUGHOUT COOLING CYCLE THERMOSTAT CALLS FOR COOLING COMPRESSOR CONTACTOR AND SYSTEM FAN ENERGIZED WITH 2 SECOND DELAY COOLING SPEED EAC TERM ENERGIZED COMPRESSOR O...

Страница 31: ...D EAC TERM REMAINS ON THERMOSTAT OPENS MANUAL FAN SELECTION MADE AT THERMOSTAT CONTROL G ENERGIZES SYSTEM FAN AT FAN SPEED EAC TERM ENERGIZED NO YES YES NO SYSTEM FAN SWITCHES TO HEAT SPEAD AFTER 30 S...

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