HTP ELP-199 - Manual (Page 73)

73
LP-294 REV. 2.20.14
DISPLAY
CODE
ERROR
INT.
CODE
DESCRIPTION POSSIBLE SOLUTION
No Code
Flame goes off at down
modulation after good
ignition
No Code Ionization is not high enough
Check appliance type settings. Check
ionization pin position. Clean pin. Check
gas pressure during modulation. Check
air pressure chart peak at low fire.
Table 46 – Error without Displayed Code
Resistance Tables
PART 15 – MAINTENANCE
A. MAINTENANCE PROCEDURES
Periodic maintenance should be performed once a year by a qualified service technician to assure that all the equipment is operating
safely and efficiently. The owner should make necessary arrangements with a qualified heating contractor for periodic maintenance of
the boiler. The installer must also inform the owner that a lack of proper care and maintenance of the boiler may result in a hazardous
condition.
BEFORE EACH HEATING SEASON a trained and qualified service technician should perform the inspections as per the boiler
inspection and maintenance schedule in the back of the manual. Failure to do so could result in death or serious injury.
Outdoor Sensor (7250P-319) Supply Temperature Sensor (7250P-324)
Outside Temperature (
o
F) Resistance (ohms) Boiler Sensor (7250P-667) Indirect Sensor (7250P-325)
-22 171800 Outside Temperature (
o
F) Resistance (ohms)
-13 129800 32 32550
-4 98930 41 25340
5 76020 50 19870
14 58880 59 15700
23 45950 68 12490
32 36130 77 10000
41 28600 86 8059
50 22800 95 6535
59 18300 104 5330
68 14770 113 4372
77 12000 122 3605
86 9804 131 2989
95 8054 140 2490
104 6652 149 2084
113 5522 158 1753
167 1481
176 1256
185 1070
194 915
203 786
212 667
Table 47 – Resistance Tables