Operating instructions

7-C MUNCHKIN BOILER FAULT LED CODE:
Wben afault conditionoccut_or isseined onlheWHC 11O0Manchkin ControUeror intheappfiame,tbe _1 _ _ _ a_0_ _.
When inthe I£)CKOUT state,tbegreenLED locatedon tixeWHC 1100Controlboardwillflash afanltcode. Thentunber oftimesto LED_
ON/OFFwilldetennine thenatureofthe fault(see thetablebelow). ToresettheControlfrom theLOCKOUT state,removeandre-apply 120VAC
line power totheControlboard.
DESCRIPTION of FAULT
Limit String Open, Water Pressure Switch, ECO's
Flame Stuck ON
Ignition Fault (No Flame)
Inlet Probe Fault
Outlet Probe Fault
Air Pressure Switch Fault, Stuck Closed
Air Pressure Switch Fault, Stuck Open
Redundant Gas Valve Relay Stuck ON
Gas Valve Relay Stuck ON
Redundant Gas Valve Relay Stuck OFF
Gas Valve Relay Stuck OFF
Gas Valve wire disconnected
ROM Checksum Failure
RAM Test Failure
60 Hz Failure
# of LED PULSES
2
3
4
5
6
7
8
9
9
10
10
11
12
13
14
NOTE: To readLED flashes - 1 flash per second within sets of flashes with
2-second wait periods between sets of flashes. During normal
operation, the LED will pulse continuously.
7-1) FAULT CONDITIONS
Umit StringOpen, High LimitFailure -- 2 PULSES
• If the limit string opens, the control will immediately remove power tothe gas valve, complete a post purge cycle, and enter
al lockout state. To restart the control, make sure that there is at least 10 PSI in the water system, then remove and re-apply
120 VAC line power.
NOTE:
The bi-metallic high limit device must physically closed before the
control board will function properly. If a user recycles power to
restart the control, and the high limit device is still open, the control
will revert back to the lockout state 2 LED PULSES.
Iflhe controlsensesa fanltinthe limitstring,the cona_lwiJlimmedialely_e ix_wertothe gasvalve. Aftercomp!etingapostptage cycle,
thecora_l will go intothe kr.kout slate.
Flame Stuck ON -- 3 PULSES
• Tbecummtstateofthe fl=rtemay be determinedby!ooking6-,nmghlbeview port ontbecombustionchamber. Iflhe tlanaeissl_k ON/OFF
tbenthettame mdimulatoror the cotmectorCN6 may not be clean,or anplugged.
Ignition Failure (No Flame) -- 4 PULSES
ffan ignitionfaihweocctas d_'ing the trial-for-ignition,the corarolwillrettnn te thepre porge st_ madattempt_ _ _. Ifatter
threetrialsan i_aitionfailtre isstillocctrdng, ttaecontrolwillgo intotbe kr..koutstale. _ thatthegas valveisoperalingconeclly _aadthe
plugis fully€(n',_:ted intotbevalve. Vedfy thatthe gas supplyisttrmd on,that thereisa propercora_ctien to the 120VAClinesotnee,_
tbeflamerodiscotuaect_l,m_lalsothattheflanaerodisclean.ReplacetheLow-Voltage Cableassembly.
13