Paloma PH-28CDVSN, Engineering Handbook

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5. Error Code [12] (Flame Failure) is displayed.
NO
YES
Is the
burner manifold
pressure normal?
*4
Check the inlet supply gas
pressure and adjust the burner
manifold pressure.
*4 Measure the burner manifold
pressure. (Refer to Pages 35 ~ 37 for
adjustment of manifold pressure.)
Check or replace Main Burner,
Flame Rod Electrode, etc.
inside combustion chamber.
I. After shutting off hot water, Error Code [51] (Gas Inlet Solenoid Valve Failure), [80] (Gas Cut-Off
Function Failure, Solenoid Valve 1~3 Failure) or [81] (Extinction Failure, Solenoid Valve 1~3
Failure) is displayed.
Try visual confirmation for any
remaining flame.
NOTE: Confirm more than two times of turning on/off at interval
of 10 seconds.
No remaining flame?
NO
Replace Gas Control Assy.
YES
Display maintenance information [0y].
Does the [0y]
indicate [01} ~ [07]
(remaining flame)? NO
YES
The water heater seems to be
normal. Try to operate again.
CC
NAT. Gas 2.52 + fan pressure (max.)
MAX. (in. w.c.) MIN. (in. w.c.)
0.45 + fan pressure (min.)
L.P. Gas 7.36 + fan pressure (max.) 1.22 + fan pressure (min.)
PH-28 Indoor
NAT. Gas 2.32 + fan pressure (max.)
MAX. (in. w.c.) MIN. (in. w.c.)
0.43 + fan pressure (min.)
L.P. Gas 6.61 + fan pressure (max.) 1.10 + fan pressure (min.)
PH-28 Outdoor
NAT. Gas 2.36 + fan pressure (max.)
MAX. (in. w.c.) MIN. (in. w.c.)
0.42 + fan pressure (min.)
L.P. Gas 7.28 + fan pressure (max.) 1.15 + fan pressure (min.)
PH-28 DV