Dettson CC15-M-V, Installation Instructions And Homeowner'S Manual

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Table 17 – Fault Code
CODE DESCRIPTION SOLUTION
0 Stand-by No fault
H"0"
Gas Heating mode.The furnace is in heating mode.
The digit displayed after in the input of the furnace.
For example, H0 means the furnace is heating
at 100%.
H5 means the furnace is heating at
approximately 50%.
C
Indicates the furnace is in cooling mode (any stage)
for communicating system and high stage for legacy
system
HP
This code indicates the furnace is in heat pump
heating mode (any stage)
F Fan Mode : The furnace is in continuous fan mode
dF
Defrost mode : Indicate the heat pump is in defrost
mode and gives supplemental heat
d4
The memory card is corrupt, invalid or there is no
memory card installed. This is a none critical fault
and the furnace may operate if it finds shared data on
the network (t-stat and control). d4 will only be display
when furnace is in standy mode
Replace the memory card
d1
No shared data : displayed when no shared data is
available. The furnace cannot function.
Replace the memory card
10
Displayed after four failed ignition attempts. The
furnace will goes inot a lockout mode and will not
attempt to ignite again for 1 hour.
It all depends on what caused the 4 failed ignition.
The error codes prior to 10 shall be retreive on the
communicating thermostat or by pushing the fault
recall button for 3 sec.
Usually, clean the flame
sensor, check your gas pressure, check the ignitor.
If some burners seems to have difficulties to stay on,
replace the burner box.
11 Failed ignition.
(1) Make sure the gas valve is on (2)Clean or
replace de flame sensor (3) Make sure the furnace
is grounded (4) Make sure gas outlet pressure is fine
(5) Replace gas valve if it is not functionning
12 The flame sense current is weak or weird
(1) Clean or replace de flame sensor (2) Check gas
outlet pressure (3) Take a combustion analysis. A
dirty flamme sensor needs to be investigate.
13 Flame lost
(1) Clean or replace de flame sensor (2) Check gas
outlet pressure (3) Check the burner box assembly
14
This fault indicate flame is present when it should not
be (1) Wire properly (2) Check gas valve (3) Check
furnace control
16
Igniter fail : could be the ignitor itself or the control
relay.
(1) Change ignitor (2) Change control
22
The main limit has opened or sensed opened.
Temperature in the heat exchanger has gone above
prescribe temperatures (1) Check for blower operation. Change motor if
needed (2) Check ductwork an filters (3) Check for
temperature rise and furnace gas valve pressure
26
Indicates that line voltage and neutral are reversed to
the furnace control.
Check voltage with meter and reverse if necessary
30 3 amps fuse open Replace the 3 amp fuse on the furnace control
33 The rollout limit switch on the burner box is open
(1) Check gas pressure (2) Check for proper
venting and venting length (3) Check pressure switch
operation and connection (4) Check for proper ID
blower operation
44
The low pressure switch is close when it should not
be
(1) Check for venting length, less than 5ft is not
enough, adding 90° elbow could be a solution (2)
Check for wind draft at the venting termination, if
necessary, relocate termination (3) Check pressure
switch et replace if necessary (4) Check for ID blower
function
45
Indicates the low pressure switch is open when the
inducer is energized at high speed
Check pressure switch and its wiring
46
Indicates the low pressure switch is open when the
inducer is energized at low speed
(1) Check the vent system for blockage (2) Check
the vent length , remove excessive vent (3) Faulty or
disconnected ID blower (4) Faulty control board (5)
Wind gust (6) Faulty pressure switch
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