Installation guide

Table 8_LED Indications
ERROR CODE LED INDICATION
Normal Operation On
Hardware Failure Off
Fan On/Off Delay Modified 1 Flash
Limit Switch Fault 2 Flushes
Flame Sense Fault 3 Flushes
Four Consecutive Limit Switch Faults 4 Flushes
Ignition Lockout Fault 5 Flushes
Induced-Draft:Motor Fault 6 Flushes
Rollout Switch Fault 7 Flushes
Internal Control Fault 8 Flushes
Temporary lock-out (1 hr) 9 Flushes
NOTES:
q. Therl_ is a 3-SI_C. p_use _e_el_ error _e displays.
2. If more than one error o_de exists, all applicable error o_d_ will be _isplayed in i_lJmefi_l seQiJetloO
3. This chart is Olnlhe wi_ng diagram located inside the bLimer access panel.
HI AUXILIARY LIMIT SWITCH (ROLLOUT)
The funedon of the switeh is to elosc the main gas valve in the eveat of flame rollout. The swlteh is located above the main burners, When the
tomperaatre at the auxiliary swltch reaches the maximum allowable temperature, the R control cirmtit trips, elosing the gas valve and stopping gas
flow to the burners. The indoor (evaporator) fan motor (IFM) and induced draft motor continue to run until sv¢itoh is reset, The IGC LED will
display FAULT CODE 7,
PROCEDURE _START-UP COOLING AND MAKE ADJUSTMENTS
CAUTION: Complete the required procedures given in the Pro-Start-Up section before starting the unit,
Do not jumper any safety devices when operating the unit,
Do not operate the compressor when the outdoor temperature is below 40°F (unless accessory low-ambient kit is installed).
Do not rapid-cycle the compressor, Allow 5 minutes between "on" cycles to prevent compressor damage,
A. CHECKING COOLING CONTROL OPERATION
Start and check the unit for proper cooling control operation as follows:
1, Plaec room thermostat SYSTEM swlteh in OFF position. Observe that blower motor starts whet FAN swlteh is placed in ON position end
shuts do'vla when FAN switch is placed in AUTO. position.
2, Place SYSTEM swlteh in COOL position and FAN switch in AUTO. position. Set cooling control below room temperature. Observethat
eomprossor, eondeuser fan, and evaporator blower motors,start. Observe that eooling cycle shutsdo;viawhen control setting is satisfied, The
evaporator fen will eontlnue to run for 30 see,
3, _rYbenllSing +31 aUtoichengCOVer room thermostat, place both SYSTEM end FAN swltchas in AUTO, positions, Ob_rve that tmlt operates
in Heating mode when temperature eontrol is set to "call for heating" (above room temperature) and operates in Cooling mode whet
temperature control is set to "call for cooling" (below room tomperattun),
I
IMPORTANT: 2larea-phasc, seroU compressor _.mha(PYIP048 end PY'2P030-060) are dJl'_,Ctionioriented, These lellts I'_lllStbc checked
to ensure proper compressor 3iphasc power lead orientation, If not con'ectod within 5 minutes, the intern01 protector shuts off the
compres_r. The 3-phase power leads to the _.mltmust be reversed to correct rotation, When V.mling hackwmxis, scroll compressors emit
elevated noise levels, and the differ,,_ncc boavecn compressor sue'don end di_hasgc preasuras may be dren'_tically lower then noN.
BI CHECKING AND ADJUSTING REFRIGERANT CHARGE
The refrigerant system is fiflly charged with R-22 refrlgemnt, tested, and factory-se23ed,
NOTE: Adjustment of the refrigerant charge is not required _.mlaas the unit is sm_pcetod of nat having the proper R122 charge,
A superheat charging chart is a_,_hed to the outside of the ser'_qec access penal. The chart includes the required suction line tomperattun at given
suction line preasuras and outdoor ambient tompera_aras,
An accurate superheat, thermocouplc- or thermlstor-type thermometer, a sling psychrometer, end a gauge menifbld are required when using the
superheat ch_ing method for evaluating the tmlt eha:rgc, Do not use mercury or small dial-type Nermometers because Nay are not adequateJbr
thL_type 6J'mea_rement,
A CAUTION: When evaluating the refrigerant charge, an indicated adjustment to the specified factory charge must
always be very minimal, If a substantial adjustment is indicated, an abnormal condition exists somewhere in the cooling
system, such as insufficient airflow across either coil or both coils,
Proeecd as follows:
1, Remove caps from low- end high-pressure servica fittings,
2, Using hoses with valve eoro d.eprassora, aRach low- end high-prassum gauge hoses to low- and high-prossum _rvice fittings, raspcefivaly.
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