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49

T

ROUBLESHOOTING

 C

HART

Symptoms of Abnormal 

Operation (Legacy 

& ComfortNet™ 

Thermostat)

Diagnostic/
Status LED 

Codes

Fault Description

ComfortNet™ 

Thermostat Only

Possible Causes

Corrective Actions

Notes & Cautions

Message

Code

• Induced draft blower 

runs continuously with no 
further furnace operation.

• Integrated control module 

LED display provides E2 
error code.

• ComfortNet™ thermostat 

“Call for Service” icon 
illuminated.

• ComfortNet™ thermostat 

scrolls “Check Furnace” 
message.

E2

• Low stage 

pressure switch 
circuit is not 
closed.

PS1 OPEN

E2

• Pressure switch hose 

blocked pinched, or 
connected improperly.

• Blocked fue and/or inlet 

air pipe, blocked drain 
system or weak induced 
draft blower.

• Incorrect pressure 

switch set point or 
malfunctioning switch 
contacts.

• Loose or improperly 

connected wiring.

• Inspect pressure switch 

hose. Repair/replace if 
necessary.

• Inspect fue and/or inlet 

air piping for blockage, 
proper length, elbows, 
and termination. Check 
drain system. Correct as 
necessary.

• Check induced draft 

blower performance. 
Correct as necessary.

• Correct pressure switch 

set point or contact 
motion.

• Tighten or correct wiring 

connection.

• Turn power OFF prior 

to repair.

• Replace pressure 

switch with proper 
replacement part.

• Replace induced draft 

blower with proper 
replacement part.

• Circulator  blower 

runs continuously. No 
furnace operation.

• Integrated control 

module LED display 
provides E3 error code.

• ComfortNet™ 

thermostat “Call 
for Service” icon 
illuminated.

• ComfortNet™ 

thermostat scrolls 
“Check Furnace” 
message.

E3

• Primary limit or 

auxiliary limit 
circuit is open.

• Rollout limit 

circuit is open.

HIGH LIMIT 

OPEN

E3

• Insuffcient conditioned 

air over the heat 
exchanger. Blocked 
flters, restrictive 
ductwork, improper 
circulator blower 
speed, or failed 
circulator blower motor.

• Flame rollout.

• Misaligned burners, 

blocked fue and/or 
air inlet pipe, or failed 
induced draft blower.

• Loose or improperly 

connected wiring.

• Check flters and 

ductwork for blockage.  
Clean flters or remove 
obstruction.

• Check circulator 

blower speed and 
performance.  Correct 
speed or replace blower 
motor if necessary.

• Check burners for 

proper alignment.

• Check fue and air inlet 

piping for blockage, 
proper length, elbows, 
and termination. 
Correct as necessary.

• Check induced draft 

blower for proper 
performance. Replace if 
necessary.

• Tighten or correct 

wiring connection.

• Turn power OFF 

prior to repair.

• See Specifcation 

Sheet applicable 
to your model* for 
allowable rise range 
and proper circulator 
speed.

• See "Vent/Flue Pipe" 

section for piping 
details.

• Induced draft blower 

and circulator blower 
runs continuously. No 
furnace operation.

• Integrated control 

module LED display 
provides E4 error code.

• ComfortNet™ 

thermostat “Call 
for Service” icon 
illuminated.

• ComfortNet™ 

thermostat scrolls 
“Check Furnace” 
message.

E4

• Flame sensed 

with no call for 
heat.

IMPROPER 

FLAME

E4

• Short to ground in 

fame sense circuit.

• Lingering burner fame.

• Slow closing gas valve.

• Correct short at fame 

sensor or in fame 
sensor wiring.

• Check for lingering 

fame.

• Verify proper operation 

of gas valve.

• Turn power OFF 

prior to repair.

• No furnace operation.

• Integrated control 

module LED display 
provides E5 error code.

• ComfortNet™ 

thermostat displays 
“Battery Power”

E5

• Open Fuse

Not 

Displayed

Not 

Displayed

• Short in low voltage 

wiring

• Locate and correct 

short in low voltage 
wiring

• Turn power OFF 

prior to repair.

• Replace fuse with 

3-amp automotive 
type

• Normal furnace 

operation. 

• Integrated control 

module LED display 
provides E6 error code.

E6

• Flame sense 

micro amp signal 
is low

WEAK 

FLAME

E6

• Flame sensor is 

coated/oxidized.

• Flame  sensor 

incorrectly positioned 
in burner fame.

• Lazy burner fame 

due to improper gas 
pressure or combustion 
air.

• Sand fame sensor if 

coated/oxidized.

• Inspect for proper 

sensor alignment.

• Check inlet air piping 

for blockage, proper 
length, elbows, and 
termination.

• Compare current gas 

pressure to rating plate.  
Adjust as needed.

• Turn power OFF 

prior to repair.

• Sand fame sensor 

with emery cloth.

• See "Vent/Flue Pipe" 

section for piping 
details.

• See rating plate for 

proper gas pressure.

Содержание *CVC96

Страница 1: ...is manual TABLE OF CONTENTS SAFETY CONSIDERATIONS 3 SHIPPING INSPECTION 4 ELECTROSTATIC DISCHARGE ESD PRECAUTIONS 4 TO THE INSTALLER 4 PRODUCT DESCRIPTION 4 FEATURES 4 PRODUCT APPLICATION 5 LOCATION R...

Страница 2: ...ULATOR BLOWER SPEEDS 34 BLOWER HEAT OFF DELAY TIMINGS 36 COMFORTNET SYSTEM 37 OVERVIEW 37 AIRFLOW CONSIDERATIONS 37 FOSSIL FUEL APPLICATIONS 37 CTK0 WIRING 38 COMFORTNET SYSTEM ADVANCED FEATURES 38 FU...

Страница 3: ...tion GOODMAN WILL NOT BE RESPONSIBLE FOR ANY INJURY OR PROPERTY DAMAGE ARISING FROM IMPROPER SERVICE OR SERVICE PROCEDURES IF YOU INSTALL OR PERFORM SERVICE ON THIS UNIT YOU ASSUME RESPONSIBILITY FOR...

Страница 4: ...est for inspection by carrier s agent must be made in writing immediately Thefurnacemustbecarefullyinspectedonarrivalfordamage and bolts or screws which may have come loose in transit In the event of...

Страница 5: ...ns Aroomthermostatisusedtocontrolthefurnace Fixed jumpers that provide continuous heating CANNOT be usedandcancauselongtermequipmentdamage Returnairductsareprovidedandsealedtothefurnace A return air t...

Страница 6: ...ications and Considerations for leveling of horizontal furnaces Ensure upflow or horizontal furnaces are not installed directlyoncarpeting oranyothercombustiblematerial Theonlycombustiblematerialallow...

Страница 7: ...ns on combustible flooring CVC96 MINIMUM CLEARANCES TO COMBUSTIBLE MATERIALS INCHES NOTES For servicing or cleaning a 24 front clearance is required Unit connections electrical flue and drain may nece...

Страница 8: ...TE Ductwork must never be attached to the back of the furnace Contact your distributor for proper airflow requirements and number of required ductwork connections Refer to Recommended In stallation Po...

Страница 9: ...ain trap Additionally the appropriate downward piping slope must be maintained from the drain trap to the drain loca tion Refer to Condensate Drain Trap and Lines for further de tails If the drain tra...

Страница 10: ...da gas furnaces are only certified to 4500 feet Gas Altitude Kit Orifice M anifold Pressure Pressure Switch Change Contact the distributor for a tabular listing of appropriate manufacturer s kits for...

Страница 11: ...se of Schedule 40 PVC or ABS cellular core Foam Core plastic pipe is also acceptable as a flue vent and intake pipe material PVC primer meeting ASTM F656 and PVC solvent cement meeting ASTM D2564 spec...

Страница 12: ...ibit sagging joint separation and or detachment from the furnace Horizontalrunsofvent fluepipingmustbesupportedeverythree to five feet and must maintain a 1 4 inch per foot downward slope back towards...

Страница 13: ...ling al lows service removal of air intake piping internal to the fur nace blower compartment The combustion air intake pipe can also be secured directly to the counterflow unit air in take pipe coupl...

Страница 14: ...w should be secured to the combustion air intake to prevent inadvertent blockage The tee used in the vent flue termination must be included when determining the number of elbows in the piping system 1...

Страница 15: ...IGHT ELBOWS Figure 13 Floor Use alternate vent combination air locations Field Supplied Drain Tee on Vent Pipe DOWN VENTING UPFLOW MODEL FURNACES ONLY Basement Crawlspace Slope 1 4 per foot min Conden...

Страница 16: ...ows and pipe diameter for construction of the vent flue and combustion air intake pipe systems of a direct vent dual pipe installation The number of elbows tabulated represents the number of el bows a...

Страница 17: ...h one pipe above the other These kits are NOTintended for use with single pipe indirect vent installations Refer to the directions furnished with the Side Wall Vent Kit p n0170K00000S or 0170K000001S...

Страница 18: ...Coupling Figure 20 NOTE Hoses are model specific and not all hoses will be shipped with all models UPFLOW MODEL INSTALLED VERTICALLY The trap and factory installed hoses remain as shipped The furnace...

Страница 19: ...TALLY WITH LEFT SIDE DOWN Minimum 5 3 8 clearance is required for the drain trap be neath the furnace Hose 6 Hose 5 Hose 11 Figure 23 1 Remove the clamps from the two drain tubes on the trap 2 Remove...

Страница 20: ...rt with a silver clamp 6 Mate the drain trap inlets to the hoses and secure with silver clamps 7 Line up the trap mounting holes with the pre drilled holes in the furnace and secure with 2 screws remo...

Страница 21: ...Y OR DEATH DUE TO ELECTRICAL SHOCK DISCONNECT ELECTRICAL POWER BEFORE SERVICING OR CHANGING ANY ELECTRICAL WIRING WARNING LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING CONTROLS WIRING ERRORS C...

Страница 22: ...To confirm proper unit grounding turn off the electrical power and perform the fol lowing check 1 Measure resistance between the neutral white connection and one of the burners 2 Resistance should me...

Страница 23: ...o the following figure 3 4 Thermostat Stage Delay Move to the ON position to select two stage thermostat or OFF to select single stage thermostat Move to the ON position to select Auto transition dela...

Страница 24: ...are identified as NEU TRAL Allfieldwiringmustconformtoapplicablecodes Connec tions should be made as shown Accessories Wiring Figure 32 If it is necessary for the installer to supply additional line v...

Страница 25: ...13 0 w c INLET GAS SUPPLY PRESSURE HIGH ALTITUDE DERATE When this furnace is installed at high altitude the appropriate HighAltitude orifice kit must be applied This is required due to the natural re...

Страница 26: ...ns figure for typical gas line connec tions to the furnace Gas piping must be supported external to the furnace cabinet so that the weight of the gas line does not distort the burner rack manifold or...

Страница 27: ...furnace cabinet where allowed by local codes COUNTERFLOW Figure 35 Drip Leg Plug in Main Gas Line Hole Alternate Union Location Manual Shut Off Valve upstream from ground joint pipe union Gas Valve Bu...

Страница 28: ...st conform to the safety stan dards of the National Board of Fire Underwriters NBFU Manual 58 For satisfactory operation propane gas pressure must be 10 WC at the furnace manifold with all gas applian...

Страница 29: ...urn air chamber CHECKING DUCT STATIC Refer to your furnace rating plate for the maximum ESP ex ternal duct static rating Total external static refers to everything external to the fur nace cabinet Coo...

Страница 30: ...ace is installed and shall be of such a size that the heat exchanger can be viewed for visual light inspection or such that a sampling probe can be inserted into the airstream The access panel must be...

Страница 31: ...control to the ON position 8 Replacetheburnercompartmentdoor 9 Openthemanualgasshutoffvalveexternaltothefurnace 10 Turn on the electrical power to the furnace 11 Adjust the thermostat to a setting ab...

Страница 32: ...l Coil Terminal M Common Terminal C White Rodgers Model 36J54 Connected to Manometer Figure 43B Gas Valve On Off Selector Switch Regulator Vent High Fire Regulator Adjust Low Fire Regulator Adjust Hon...

Страница 33: ...rew from the low LO outlet pressure regulator adjust tower and turn screw clockwise to increase pressure or counterclockwise to decrease pressure Replace regulator cover screw 9 Close thermostat R and...

Страница 34: ...emperaturerisebyadjustingthecirculatorblower speed Increaseblowerspeedtoreducetemperaturerise Decreaseblowerspeedtoincreasetemperaturerise Refer to Startup Procedure and Adjustment Circulator Blower S...

Страница 35: ...nd their corresponding taps Verify CFM by noting the number displayed on the dual 7 segment LED display 6 Themulti speedcirculatorbloweralsooffersseveralcustom ON OFF ramping profiles These profiles m...

Страница 36: ...Sheet The adjust setting already established by the cooling speed selection determineswhichsetofspeedsareavailable Theselected speed must provide a temperature rise within the rise range listed with t...

Страница 37: ...s the demand and sends it to the ECM motor If the outdoor unit or thermo stat is responsible for determining the demand it calcu lates the demand and transmits the demand along with a fan request to t...

Страница 38: ...r is recommended if installing a dual fuel fossil fuel system Failure to use the transformer in the outdoorunitcouldresultinoverloadingofthefurnacetransformer 1 2 R C 1 2 R C CTK0 Thermostat ComfortNe...

Страница 39: ...most recent furnace fault For display only Fault 3 FAULT 3 Next most recent furnace fault For display only Fault 4 FAULT 4 Next most recent furnace fault For display only Fault 5 FAULT 5 Next most rec...

Страница 40: ...5 2 50 3 75 4 100 of maximum airflow SET UP Submenu Item Indication for Display Only not User Modifiable Mode MODE Displays the current furnace operating mode CFM CFM Displays the airflow for the curr...

Страница 41: ...nstalled with a communicating compatible heat pump the system is recognized as a dual fuel system The balance point temperature should be set via the thermo stat DIAGNOSTICS Accessing the furnace s di...

Страница 42: ...ill immediately switch the induced draft blower gas valve and circulator blower to their high stage settings If the two stage thermostat changes the call from high heat to low heat the control will im...

Страница 43: ...d electrically automaticreset temperature ac tivated sensor The limit guards against overheating as a result of insufficient conditioned air passing over the heat exchanger AUXILIARY LIMIT The auxilia...

Страница 44: ...Refer to the Troubleshooting Chart for aid in determining the cause MAINTENANCE TO AVOID ELECTRICAL SHOCK INJURY OR DEATH DISCONNECT ELECTRICAL POWER BEFORE PERFORMING ANY MAINTENANCE IF YOU MUST HAND...

Страница 45: ...drainage Check drain system for hose connection tightness blockage and leaks Clean or repair as necessary FLAME SENSOR QUALIFIED SERVICER ONLY Under some conditions the fuel or air supply can create a...

Страница 46: ...D On On Add 5 Off Off Minus 5 On Off Add 10 Off On Minus 10 On On A Off Off B On Off C Off On D On On A Off Off B On Off C Off On D On On Disabled Off Enabled On Disabled Off Enabled On 25 Off Off 50...

Страница 47: ...ALTERNATES WITH F L 0 b 1 b 6 1 2 b 9 L O b 7 F C 2 b 5 b 3 b 4 d 0 0140F01169 REV A C 1 HIGH STAGE HEAT PUMP HEAT P 1 P 2 E F AUXILIARY SWITCH OPEN P 1 O n E 4 H I INTERNAL CONTROL FAULT NO POWER NO...

Страница 48: ...Call for Service icon illuminated ComfortNet thermostat scrolls Check Furnace message E0 Furnace lockout due to an excessive number of ignition retries 3 total LOCKOUT E0 Failure to establish fame Ca...

Страница 49: ...rs and ductwork for blockage Clean flters or remove obstruction Check circulator blower speed and performance Correct speed or replace blower motor if necessary Check burners for proper alignment Chec...

Страница 50: ...d improperly Blocked fue and or inlet air pipe blocked drain system or weak induced draft blower Incorrect pressure switch set point or malfunctioning switch contacts Loose or improperly connected wir...

Страница 51: ...ontrol module has lost communications with circulator blower motor MOTOR COMM b1 Loose wiring connection at circulator motor control leads Failed circulator blower motor Failed integrated control modu...

Страница 52: ...t scrolls Check Furnace message b7 MOTOR PARAMS b7 Furnace operates at reduced performance or Integrated control module LED display provides b9 error code b9 LOW ID AIRFLOW B9 Blocked filters Restrict...

Страница 53: ...53 THIS PAGE LEFT INTENTIONALLY BLANK...

Страница 54: ...AMPS LIMIT CONTROL AUXILIARY AUTO RESET PK WARNING DISCONNECT TRANSFORMER 40 VA PU GY N NO 3 BR 4 UNIT MUST BE PERMANENTLY GROUNDED AND CONFORM TO N E C AND LOCAL CODES COLOR CODES 1 E SWITCH PRESSUR...

Страница 55: ...t vent terminal for the horizontally vented gas fueled heating appliance or equipment The sign shall read in print size no less than one half 1 2 inch in size GAS VENT DIRECTLY BELOW KEEP CLEAR OF ALL...

Страница 56: ...re They are simple to service and forgiving to operate We use quality materials and components Finally every unit is run tested before it leaves the factory That s why we know There s No Better Qualit...

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