Installation guide

Table 18_Troubleshooting Guide_LED Error Codes
CAUSESYMPTOM
Hardwa_ failure,
(LED OFFI
Fan OH/OFF delay modilied
(LED{FLASHI
Limit switch faults.
(LED 2 flashes)
Flame _nse fault,
(LED 3 flashes)
4 consecative limit switch faaltc.
(LED 4 flashes)
Ignition Iockoat.
(LED 5 flashes)
LOSSof power to control modLile (IGC)*.
High limit _itori pee=_s 0uring rieet
exchanger warm-up period he.re _a=_-o=_
delay expires.
Limit switori opens withil_ triree minutes
after blewer_o_ del_f timil_;i in Heatin;i mode.
High temperature limit _itori is Open.
The IGC* sel_sed flame that shetlld net be
present.
Inadeq_at_ airflow _ unit
Ul_it UnS_C_Ss_Ily a_ill_d i_nitioin for
15 nlin_es.
led_ced-draft motor fault IGC bees n_ sense triat induced_l_
(LED 6 flashes) m_er is eberatinG.*
Rollout switch fault,
(LED 7 flashes) RolIo_ swil_h has opened.
REMEDY
Check _-amp fLise OI_IGC*. bower to _l_it, 24 v ci_i_ breaker, and
trai_sfonlle_ Llni[s withe_ _ 24 v circuit bre_er h_ve an internal
overio_d in _e 24 v trans_rmer. I_the overload trips, _llow 10 mil_-
_e_
for a_r_illa_ic reset.
Ensure _l_it is fired on rats; ensure tsmperat_re rise is correct.
Ensure _l_it's extsn_l st._tic DressLire is within _bDlica_ien _Llidelil_eS.
Check _e operabon Of trie indoor (ev,_peretor_ fan motor. Ensure
that trie s_ppl_ir temberetLire ri_ is in _r:_'_rd_nOS with the range
Ol_the unit nanleptsts.
Reset Linit. I_ problem bersists, replace control board.
Check operation of i=_deor(evaperetor_ bn motor _nd Ihet supel_ir
temper_Jre rise _rees witri Pal_e on unit n_meDla_e il_rm_tion.
Check i_nitor _nd fl_me sensor electrede sDacil_, gaps, etc. El_SLire
that _l_me sense al_d igl_itionwires _re DreDerly tsrrnin_tsd. Veri_
that unit is obtaining _ro_er amount of _s.
Check for proper voltage. If motor is ebera_ing, check the speed
sensor plu_[l_C Tenllinal J2 COnl_e_ion. Proper connection:
_IN 1 Wh_e
_IN 2 Red
_IN 3 ¸ BI_Ck.
FtolleLIt switch will _Litom_celly reset, b_ IGO* will cor_inLle to lock-
out unit. Check gas v_lve operation. Ensure that inducedrdra_
blower wheel is properly secured to nloter sh_. Re_t _l_it at Linit
discennecL
Rollout control fault. _icrobroce_,sor has sensed _n error in the
(LED g flashes) se[tware or riardware. If error code is inet deared by reset'ring u=_itpower, replace the IGC*.
Temporary sot'tware lOCk o_t. Etsctric_l interference Reset 2_-vI to _lntrol board or t_m thermostat off,
then on 3gain. F_lt will _tem_tically
(LED 9 flashes) impeding IGC software reset itself in one (1) hour.
* WARNINGz_ : I_trie IGC must be replaced, be sL_reto _round yourself to dissipats any electrical criarge trim may be prese_ before riandling =_ewc_=_trolboard. The IGC
issensitive to static electricity _nd m_y be d_rnaged if trie necessary precautions are net _ken.
IMFtORTANT: Refar to Table17 _re_btssheotingGuide He_ngforadditienaltroLtsleshootil_an_lysis.
LEGEND
IOC I Ints_ratsd Gas Unit Col_troller
LED I Li_ri_Ernitting Diode
I37I