background image

19

TROUBLESHOOTING INFORMATION: UNITARY DIAGNOSTIC CODES

Dia

gnos

ti

c

/Sta

tu

s

 LED Code

s

 

ComfortNet™ 

T

h

ermostat Onl

y

 

S

y

m

p

toms of 

A

b

normal 

Op

eratio

n

 (L

eg

a

c

y

 &

 

ComfortNet™ T

h

ermost

at) 

G

ree

Y

e

llow

 

R

ed 

R

ed Y

1

 

Fa

ult 

De

s

c

ript

ion 

Mess

ag

C

ode 

Possible Cau

se

s

 

C

o

rrect

iv

e A

c

ti

on

s

 

Not

e

s

 & Ca

utions

 

x

 F

our 

co

ns

ec

utiv

comp

re

ss

or 

pro

te

c

to

r t

rip

s w

ith

 av

erag

e r

un 

time 

betw

e

e

n

 tr

ip

s

 gr

eat

er

 th

an 

minut

an

d l

e

s

s

 t

h

an 

15 m

in

u

te

s. 

x

 

Low

 pre

s

s

u

re

 a

n

d

 hig

h

 pr

es

sur

sw

itche

s a

re

 cl

os

e

d

x

 

Int

egr

at

ed co

ntr

o

l modu

le 

dia

g

n

o

st

ic/

s

ta

tu

s LE

D

’s 

d

is

p

lay

 

the

 in

dic

a

ted 

co

de

OFF 

2

 Flas

he

s

 

OFF 

ON if 

call

 

p

res

en

t

; OFF if 

no cal

x

 H

igh 

S

ide 

F

ault 

HIGH SIDE 

FAUL

02 

x

 Bl

o

c

ke

co

nd

en

s

e

coil

x

 Outdo

or

 fa

not

 

run

n

ing. 

 

x

 

Ch

e

c

k

 an

d c

le

a

n

 

c

o

nd

en

se

r co

il.

 

x

 Ch

e

c

k

 ou

td

oo

fan 

motor; 

rep

air

/r

epl

ac

e as 

nee

de

d. 

x

 Ch

e

c

k

 ou

td

oo

fan 

motor

 w

iring

rep

air

/r

epl

ac

e as 

nee

de

d. 

x

 Ch

e

c

k

 ou

td

oo

fan 

motor

 c

a

p

a

ci

to

r; 

re

pl

ac

e

 a

s

 ne

ed

ed

 

x

 Tu

rn

 p

o

w

e

OFF 

pri

o

r t

o

 re

pai

r. 

x

 

Fault 

w

ill cle

a

r aft

e

4

 co

ns

ec

u

ti

v

e

 

norm

a

l cy

cles. 

x

 

F

a

ult m

a

y

 be 

cle

a

re

d by

 cy

cling

 

24V

A

C

 to 

co

ntr

o

l.

 

x

 

Re

p

lac

e w

it

h

 co

rr

e

c

re

pl

ac

e

m

en

t p

a

rt

(s

).

 

x

 

C

o

mpre

s

s

o

a

nd out

do

or fa

a

re 

off. 

x

 

T

hermo

st

at dema

nd 

is

 pr

es

ent

x

 

Int

egr

at

ed co

ntr

o

l modu

le 

dia

g

n

o

st

ic/

s

ta

tu

s LE

D

’s 

d

is

p

lay

 

the

 in

dic

a

ted 

co

de

ON 

2

 Flas

he

s

 

OFF 

ON if 

call

 

p

res

en

t

; OFF if 

no cal

x

 H

igh 

Press

ur

e Cu

Ou

t Trip

 

HPS OP

EN 

0

2

 

x

 Bl

o

c

ke

co

nd

en

s

e

coil

x

 Outdo

or

 fa

not

 

run

n

ing. 

x

 

C

h

ec

k a

n

d

 cl

ea

c

o

nd

en

se

r co

il.

 

x

 Ch

e

c

k

 ou

td

oo

fan 

motor; 

rep

a

ir

/r

epl

ac

e as 

nee

de

d. 

x

 Ch

e

c

k

 ou

td

oo

fan 

motor

 w

iring

rep

a

ir

/r

epl

ac

e as 

nee

de

d. 

x

 Ch

e

c

k

 ou

td

oo

fan 

motor

 c

a

p

a

ci

to

r; 

re

pl

ac

e

 a

s

 ne

ed

ed

x

 Tu

rn

 p

o

w

e

OFF 

pri

o

r t

o

 re

pai

r. 

x

 

Re

p

lac

e w

it

h

 co

rr

e

c

re

pl

ac

e

m

en

t p

a

rt

(s

).

 

x

 

C

o

mpre

s

s

o

a

nd out

do

or fa

a

re 

off. 

x

 

Low

 pre

s

s

u

re

 sw

it

ch 

tri

p 3

 tim

es 

w

ithin 

s

a

me th

erm

o

st

at dem

an

d. 

x

 

T

hermo

st

at dema

nd 

is

 pr

es

ent

x

 

Int

egr

at

ed co

ntr

o

l modu

le 

dia

g

n

o

st

ic/

s

ta

tu

s LE

D

’s 

d

is

p

lay

 

the

 in

dic

a

ted 

co

de

x

 

ComfortN

et™ th

er

most

at “Call fo

S

e

rv

ice” i

c

o

n

 il

lum

inat

ed

x

 

ComfortN

e

t™ th

er

most

at sc

roll

s

 

“C

he

ck A

ir C

o

ndi

ti

one

r” 

or

  

“C

he

ck H

eat

 P

u

m

p

” me

ss

ag

e. 

ON 

2

 Flas

he

s

 

ON 

ON if 

call

 

p

res

en

t

; OFF if 

no cal

x

 H

igh 

Press

ur

e Cu

Ou

t Lo

ck

ou

(3 T

ri

p

s

HPS 

LO

C

K

O

U

T

 

02 

x

 Bl

o

c

ke

co

nd

en

s

e

coil

x

 Outdo

or

 fa

not

 

run

n

ing. 

x

 

Ch

e

c

k

 an

d c

le

a

n

 

c

o

nd

en

se

r co

il.

 

x

 Ch

e

c

k

 ou

td

oo

fan 

motor; 

rep

a

ir

/r

epl

ac

e as 

nee

de

d. 

x

 Ch

e

c

k

 ou

td

oo

fan 

motor

 w

iring

rep

a

ir

/r

epl

a

c

e

 as 

nee

de

d. 

x

 Ch

e

c

k

 ou

td

oo

fan 

motor

 c

a

p

a

ci

to

r; 

re

pl

ac

e

 a

s

 ne

ed

ed

x

 Tu

rn

 p

o

w

e

OFF 

pri

o

r t

o

 re

pai

r. 

x

 

M

u

st 

cl

ear

 f

ault

 by

 

cy

cling 24V

A

C

 to 

con

tr

ol. 

x

 

Re

p

lac

e w

it

h

 co

rr

e

c

rep

la

c

eme

n

t pa

rt(

s

). 

x

 

R

un tim

e f

o

r la

st 

4

 cy

cles i

s

 les

s

 

th

an

 3 mi

nu

te

s

 e

a

c

h

x

 

Co

m

p

res

so

r p

ro

tec

to

r ha

s no

trip

pe

d. 

x

 

Low

 pre

s

s

u

re

 a

n

d

 hig

h

 pr

es

sur

sw

itche

s a

re

 cl

os

e

d

x

 

Int

egr

at

ed co

ntr

o

l modu

le 

dia

g

n

o

st

ic/

s

ta

tu

s LE

D

’s 

d

is

p

lay

 

the

 in

dic

a

ted 

co

de

OFF 

3

 Flas

he

s

 

OFF 

ON if 

call

 

p

res

en

t

; OFF if 

no cal

x

 S

h

ort

 C

y

cling 

CMPR 

SHRT 

CYCL

03 

x

 Int

e

rmit

te

n

th

e

rm

o

st

at 

d

e

m

an

d.

 

x

 F

a

ulty

 comp

re

ss

o

rel

a

y

x

 C

h

ec

th

e

rmos

tat

 

and

 th

erm

o

st

at

 

w

iring; 

rep

air

/r

epl

ac

e as 

nee

de

d. 

x

 Chec

c

o

mp

re

ss

o

rel

a

y

 oper

ati

on;

 

re

pl

ac

e

 c

o

n

tro

l a

s

 

nee

de

d. 

x

 Tu

rn

 p

o

w

e

OFF 

pri

o

r t

o

 re

pai

r. 

x

 

Fault 

w

ill cle

a

r aft

e

4

 co

ns

ec

u

ti

v

e

 

norm

a

l cy

cles. 

x

 

F

a

ult m

a

y

 be 

cle

a

re

d by

 cy

cling

 

24V

A

C

 to 

co

ntr

o

l.

 

x

 

Re

p

lac

e w

it

h

 co

rr

e

c

re

pl

ac

e

m

en

t p

a

rt

(s

).

 

x

 Minimum 

comp

re

ss

or ru

nt 

time i

s

 ch

an

ge

d fr

om 

30 

se

co

nd

s t

o

 3

 

minutes. 

Содержание CONDENSING UNITAIR CONDITIONING

Страница 1: ...four and a minimum of two IMPORTANT SAFETY INSTRUCTIONS The following symbols and labels are used throughout this manual to indicate immediate or potential safety hazards It is the owner s and instal...

Страница 2: ...pads or springs can be installed between the con densing unit legs or frame and the roof mounting assembly to reduce noise vibration SAFE REFRIGERANT HANDLING While these items will not cover every co...

Страница 3: ...red Insulation must be installed in a manner which protects tubing from damage and contamination Where possible drain as much residual compressor oil from existing systems lines and traps pay close at...

Страница 4: ...ITROGEN CYLINDER MUST INCLUDE A PRESSURE REGULATOR AND A PRESSURE RELIEF VALVE THE PRESSURE RELIEF VALVE MUST BE SET TO OPEN AT NO MORE THAN 150 PSIG WARNING Pressure test the system using dry nitroge...

Страница 5: ...protection devices are approved for use Time delay fuses HACR type circuit breakers These devices have sufficient time delay to permit the motor compressor to start and accelerate its load HIGH VOLTA...

Страница 6: ...charge has bled into the system open the liquid service valve The service valve cap is the secondary seal for the valves and must be properly tightened to prevent leaks Make sure cap is clean and appl...

Страница 7: ...and superheat are high adjust TXV valve to 7 to 9 F superheat then check subcooling d If subcooling is high and superheat is low adjust TXV valve to 7 to 9 F superheat and remove charge to lower the...

Страница 8: ...another In a traditional system the thermostat sends commands to the indoor and outdoor units via analog 24 VAC signals It is a one way communication path in that the indoor and outdoor units typical...

Страница 9: ...mostat CT Compatible Air Handler Furnace Modular Blower Integrated Control Module CT Compatible AC HP Integrated Control Module 1 2 R C System Wiring Using Four Wires TWO WIRE OUTDOOR FOUR WIRE INDOOR...

Страница 10: ...displayed in the scrolling display area while the data is being retrieved The first sub menu is then displayed See tables below for listing of air conditioner submenus Touch the or _ to step through t...

Страница 11: ...ecent AC HP fault For display only Fault 6 FAULT 6 Least recent AC HP fault For display only Clear Fault History CLEAR NO or YES Selecting YES clears the fault history NOTE Consecutively repeated faul...

Страница 12: ...bmenu Item Indication for Display Only not User Modifiable Mode MODE Displays the current air conditioner or heat pump operating mode CFM CFM Displays the airflow for the current operating mode STATUS...

Страница 13: ...s dc Data 2 should be approximately 2 2 volts dc The voltage difference between data 1 and data 2 should be approximately 0 6 volts dc Verify that the bus TERM dipswitches are in the ON position 1 2 O...

Страница 14: ...are securely twisted together prior to inserting into terminal block Verify installation type legacy traditional or communicating Check data 1 data 2 voltages Rapid Flashing Normal network traffic Co...

Страница 15: ...rcuit Test Control Circuit with Voltmeter Low Voltage Test Voltage Faulty Evaporator Fan Motor Repair or Replace Shorted or Grounded Fan Motor Test Motor Windings Improper Cooling Anticipator Check Re...

Страница 16: ...e indicated code 6 Flashes ON OFF OFF x Board miss operation INTERNAL FAULT EE x Compressor relay contacts welded x Replace control x Turn power OFF prior to repair x Replace with correct replacement...

Страница 17: ...emory card x Error code will be cleared once data is loaded Applies only to fully communicating system using ComfortNet thermostat x Air conditioner heat pump fails to operate x Air conditioner heat p...

Страница 18: ...indoor blower motor repair replace as needed x Check indoor thermostat setting x Turn power OFF prior to repair x Fault will clear after 30 consecutive normal cycles x Fault may be cleared by cycling...

Страница 19: ...tdoor fan motor capacitor replace as needed x Turn power OFF prior to repair x Replace with correct replacement part s x Compressor and outdoor fan are off x Low pressure switch trip 3 times within sa...

Страница 20: ...ompressor repair replace as needed x Check compressor wiring repair replace as needed x Turn power OFF prior to repair x Fault will clear after 1 normal cycle x Fault may be cleared by cycling 24VAC t...

Страница 21: ...all x Open Run Circuit Lockout OPEN RUN LOCK 07 x Compressor run winding is open x Compressor not properly wired to control x Faulty compressor wiring x Check compressor repair replace as needed x Che...

Страница 22: ...Check transformer replace if needed x Turn power OFF prior to repair x Fault will clear if secondary voltage rises above 21VAC x Replace with correct replacement part s x Compressor is off x Integrat...

Страница 23: ...23 THISPAGELEFTINTENTIONALLYBLANK...

Страница 24: ...rant Loss of refrigerant can cause poor operation and or severe equipment damage Do not use a condensing unit cover to protect the outdoor unit during the winter unless you first discuss it with your...

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