Part 14, Troubleshooting, A. error code – HTP MC120 User Manual
Page 65: B. heater error, C. heater fault, Part 14 – troubleshooting
65
LP-171 Rev. 4.10.14
PART 14 – TROUBLESHOOTING
A. ERROR CODE
An error code may occur in the installation of the heater. This condition may lead to a lock out condition of the controller, which will
need to be manually reset through the
{S4}
. These temporary codes will help the
installer correct the problem before going into a lock out condition, which will require a
manual reset.
B. HEATER ERROR
1. When an error condition occurs the controller will display an error code on the
display module.
2. These error codes and several suggested corrective actions are included in Table
14.
3. In the case of E00, E13, and E14 this error, if uncorrected, will go into a fault
condition as described is Paragraph C (Heater Fault).
C. HEATER FAULT
1.
When a fault condition occurs the controller will illuminate the red “fault” indication
light and display a fault code in the format (Example:
|F00|
) on the display module.
2. Note the fault code and refer to Table 15 for an explanation of the fault code along
with several suggestions for corrective actions.
3. Press the reset key to clear the fault and resume operation. Be sure to observe the
operation of the unit to prevent a recurrence of the fault.
When servicing or replacing any components of this heater be certain that:
The gas is off.
All electrical power is disconnected.
When servicing or replacing parts that are in direct contact with heater water, be certain that:
There is no pressure in the heater. (Pull the release on the relief valve. Do not rely on the pressure gauge reading.)
The heater water is not hot.
The electrical power is off.
DO NOT USE THIS HEATER IF ANY PART HAS BEEN SUBMERGED IN WATER. Immediately call a qualified service technician.
The heater MUST BE replaced if it has been submerged. Attempting to operate an heater that has been submerged could create
numerous harmful conditions, such as a potential gas leakage causing a fire and/or explosion, or the release of mold, bacteria, or other
harmful particulates into the air. Operating a previously submerged heater could result in property damage, severe personal injury, or
death.
NOTE: Heater damage due to flood or submersion is considered an Act of God, and IS NOT covered under product warranty.
This heater has wire function labels on all internal wiring. Observe the position of each wire before removing it. Wiring errors may cause
improper and dangerous operation. Verify proper operation after servicing.
CONTROL PROGRAM REFERENCE CHART
FUNCTION
DEFAULT
SETTING
PROGRAMMED
SETTING
1
de
No change allowed
2
149
o
F
No change allowed
3
160
o
F
4
36
o
F
No change allowed
5
7
o
F
6
0 Min.
7
68
o
F
8
5
o
F
9
180
o
F
10
68
o
F
11
95
o
F
12
68
o
F
13
0 Min.
14
30 Min.
15
0
16
0
17
0
18
1
19
180
o
F
Table 13
If overheating occurs or the gas supply fails to shut off, do not turn off electrical power to the circulating pump. This may aggravate the
problem and increase the likelihood of heater damage. Instead, shut off the gas supply to the heater at the gas service valve.