Grant Products HPAW155 - Manual (Page 43)

Fault Finding
39
Protection/failure Display
Inlet water temperature sensor failure PP 1
Coil temperature sensor failure PP 3
Ambient temperature sensor failure PP 5
Winter anti-freeze protection PP 7
High pressure EE 1
Low pressure EE 2
Flow switch EE 3
Wrong/ miss phase EE 4
Electrical shock protection EE 5
Defrosting Defrosting indicator
communication failure EE 8
Item Field Num Field Display
E01 Err EEprom read error
BOIL OUT SHr HP Flow sensor short
BOIL OUT OPn HP Flow sensor open
BOIL IN SHr HP return sensor short
BOIL IN OPn HP return sensor open
SUP SHr Supply sensor short
SUP OPn EE 3Supply sensor open
OUTDR SHr Outdoor sensor short
OUTDR OPn Outdoor supply sensor open
Figure 13-4: ATC fault codes
Figure 13-3: BTC sensor resistance table
Figure 13-5: BTC fault codes
Temperature Resistance Temperature Resistance Temperature Resistance Temperature Resistance
˚C k W ˚C k W ˚C k W ˚C W
-46 490.813 -7 46.218 32 7.334 71 1,689
-43 405.710 -4 39.913 35 6.532 74 1,538
-40 336.606 -1 34.558 38 5.828 77 1,403
-37 280.279 2 29.996 41 5.210 79 1,281
-34 234.196 4 26.099 43 4.665 82 1,172
-32 196.358 7 22.763 46 4.184 85 1,073
-29 165.180 10 19.900 49 3.760 88 983
-26 139.402 13 17.436 52 3.383 91 903
-23 118.018 16 15.311 54 3.050 93 829
-21 100.221 18 13.474 57 2.754 96 763
-18 85.362 21 11.883 60 2.490 99 703
-15 72.918 24 10.501 63 2.255 102 648
-12 62.465 27 9.299 66 2.045 104 598
-9 53.658 29 8.250 68 1.857 107 553
BTC