Alto-Shaam COMBITHERM CTC Series Operation, Maintenance, Troubleshooting, Wiring Diagrams page 57

Error Codes
Error Error Call Out in Display
Code
E51
No Water In Boiler
E53 Fan Motor High Temperatures
E54
Lower Fan Motor High
Temperature
E55
Vent Not Open (Lower vent on
dual vent system)
E56
Vent 2 Not Open (Upper vent
on dual vent system)
E57
No Rinse Water
E88 Lower Gas Ignition Failure
NOTE: If aft er 2 attempts
to clear this error, the error
appears a third time, remove
the oven from service and
immediately contact an
Alto-Shaam authorized service
provider.
E89 Upper Gas Ignition Failure
NOTE: If aft er 2 attempts
to clear this error, the error
appears a third time, remove
the oven from service and
immediately contact an
Alto-Shaam authorized service
provider.
M N - 3 5 9 4 9 • R e v 0 4
Description of Error
Lower water level probe B2 is
not satisfied within 5 minutes,
aft er water solenoid valve Y1 is
activated
Fan motor does not spin, result
in over-heating, detected
by motor coil safety thermo
element. Temperature more
than 320°F (160°C).
Lower fan motor does not spin,
result in over-heating, detected
by motor coil safety thermo
element. Temperature more
than 320°F (160°C).
60 seconds aft er the venting
motor is activated the vent
motor safety switch did not
open.
60 seconds aft er the venting
motor is activated the vent
motor safety switch did not
open.
Flow switch for solenoid valve Y4
does not detect any water flow
for a minimum of 60 seconds.
Reset output from Ignition
Module is ON
Reset output from Ignition
Module is ON
• 0 6 / 1 6 • C o m b i t h e r m ® C T P R O f o r m a n c e ™ S e r i e s
Possible Cause(s)
— Water supply is shut off .
— Low water pressure.
— Boiler drain cap missing.
— Boiler drain pump defective.
— Drain pump elbow leaking.
— Water level probe has calcium build up.
— Double water solenoid valve defective (Y1).
— Relay board, high voltage, defective.
— Motor high limit open or wired incorrectly.
— If LED on motor control flashes, see error codes for motor
control.
— Motor or fan wheel locked.
— Fan wheel damaged.
— Motor high limit open or wired incorrectly.
— If LED on motor control flashes, see error codes for motor
control.
— Motor or fan wheel locked.
— Fan wheel damaged.
— Alignment issue between motor cam and vent motor safety
switch (micro switch).
— Faulty vent valve (motor).
— Faulty vent valve safety switch (micro switch).
— Alignment issue between motor cam and vent motor safety
switch (micro switch).
— Faulty vent valve (motor).
— Faulty vent valve safety switch (micro switch).
— Water supply is shut off .
— Low water pressure.
— Flow switch is dirty or defective.
— Double water solenoid valve defective (Y3).
— Relay board, high voltage, defective.
— Hot surface ignitor not functioning.
— No gas supply.
— Flame sensor not functioning.
— Faulty ignition control.
— Hot surface ignitor not functioning.
— No gas supply.
— Flame sensor not functioning.
— Faulty ignition control.
• T e c h n i c a l S e r v i c e M a n u a l
Error Codes
continued on next page
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