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My Paloma "Main remote control UMC117" (after 30 seconds of
My Paloma "Main remote control UMC117" (after 30 seconds of plugging in) is flashing "76". The on/off button doesn't respond, when pressed (no lights), nor do the up/down buttons. Do I need to replace… read more
BillyHvac
BillyHvac
Journeyman Service Technician
State Licensed Mechanical Contractor
14,148 satisfied customers
I have a tankless water heater PTG-74PVN-1 bough in 2008 and
I have a tankless water heater PTG-74PVN-1 bough in 2008 and self installed, just recently era 11 then it flash to a C2 my flue is clean what is C2??? Charles Schaefer… read more
Rick
Rick
Supervisor
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We have no hot water. My wife noticed a C7 code. I shut down
We have no hot water. My wife noticed a C7 code. I shut down the unit by unpluging the cord. I waited 5 minutes and I now have a 76 code. The code is on for a few seconds then temp indicates 120 and u… read more
hvacexpertjoe
hvacexpertjoe
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Vocational, Technical or Trade Scho
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I have a Paloma 42PVP tankless water heater. It has recently
I have a Paloma 42PVP tankless water heater. It has recently decided to not work. If I unplug and let it set for awhile, then plug it back in, it will work fine for awhile but then quits working again… read more
BillyHvac
BillyHvac
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We have Paloma PH-28R 7.4 GPM Residential Tankless Water Heater,
We have Paloma PH-28R 7.4 GPM Residential Tankless Water Heater, the controller displays error code "76" and we don't have any warm or hot water.… read more
BillyHvac
BillyHvac
Journeyman Service Technician
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I have a Paloma Model PH 28R1FSN tankless water heater that
I have a Paloma Model PH 28R1FSN tankless water heater that I installed in 2006. The Bath Remote Control USC1-117 now turns itself off repeatedly. I suspect that we may have had some voltage spikes co… read more
Phil
Phil
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Degree, Mech Engr Technology
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I have a Rheem pronto tankless hot water heater that is 2 years
I have a Rheem pronto tankless hot water heater that is 2 years old. It worked great for the first year.It has an error message of C2 on the remote control. This signals that it is not getting enough … read more
Rick Mather
Rick Mather
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Vocational, Technical or Trade Scho
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I have a paloma ptg2-42pvp tankless water heater, I set the
I have a paloma ptg2-42pvp tankless water heater, I set the temp at 120 ti will work then it cuts off and flashes 76 deg.. i thought i lost connection email address [email protected]… read more
Douglas
Douglas
Vocational, Technical or Trade Scho
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No hot water from my Rheem Pronto Propane outside installed
No hot water from my Rheem Pronto Propane outside installed tankless water heater. Rheem UMC-117 Control panel normally reads 120 degrees. Now digital readout is blinking with what I suspect is a diag… read more
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Douglas
Vocational, Technical or Trade Scho
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I have a paloma tankless ptg-74pvn and the unit does not kick
I have a paloma tankless ptg-74pvn and the unit does not kick on at all, it worked this morning before i went to work but when I came home to demand hot water it doesn't kick on. The bath remote quit … read more
Douglas
Douglas
Vocational, Technical or Trade Scho
3,113 satisfied customers
Unit was installed 6 months ago, operated with no problems.
Unit was installed 6 months ago, operated with no problems. tenants had the gas service shut off for 2 summer months and had the service turned back on a week ago. Since the service activation water d… read more
Douglas
Douglas
Vocational, Technical or Trade Scho
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Gentlemen, I have a Paloma Tankless Water Heater that wont
Gentlemen, I have a Paloma Tankless Water Heater that won't remain on to heat water. There is an error code "C8" that is alternately flashed with the current water temperature. Is there anything that … read more
M Oglesby
M Oglesby
Vocational, Technical or Trade Scho
2,038 satisfied customers
I have a Richmond tankless water heater Model # RMTG-74PVN-1.
I have a Richmond tankless water heater Model # XXXXX It was installed the summer of 2007. has operated proplem free until last week when it stopped working and flashing C7 on the remote. Can you advi… read more
Douglas
Douglas
Vocational, Technical or Trade Scho
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On an outdoor tankless natural gas water heater - model RTG-53XN,
On an outdoor tankless natural gas water heater - model RTG-53XN, what does the error code C7 with the number 76 mean? After trying to restart the heater following the service manual, within a few sec… read more
Douglas
Douglas
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3,113 satisfied customers
I have a Paloma tankless water heater model PTG-74PVN. Anyone
I have a Paloma tankless water heater model PTG-74PVN. Anyone have any experience with water temp issues. Seems to be putting out only (guessing) 100 degrees with only one shower on. Never an issue be… read more
Douglas
Douglas
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I am renting a home that is new (less than a year old). It
I am renting a home that is new (less than a year old). It has a Rinnai water heater. After about two months, I cannot get the water to stay hot for a bath or shower. When I shower, which is about 10 … read more
Douglas
Douglas
Vocational, Technical or Trade Scho
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I have a Poloma (Rheem) tankless waterheater 5.3. It is shutting
I have a Poloma (Rheem) tankless waterheater 5.3. It is shutting down with an error code of C4, and less often, C7. Those codes are not listed in the manual. Can you tell me what they mean.… read more
Regan Land
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I have a Rheem remote thermostat USC1-117 on my Rheem tankless
I have a Rheem remote thermostat USC1-117 on my Rheem tankless water heater. We are having freezing temperatures in the Houston area and every time I turn on my hot water the thermostat and the heater… read more
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Vocational, Technical or Trade Scho
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Meet the Experts:

Phil

Phil

Mechanical Engineer

8,427 satisfied customers

Retired HVAC/ Electrical & Boiler contractor. Industrial

Rick Mather

Rick Mather

HVAC Technician

3,133 satisfied customers

35 years experience, HVAC

Matthew

Matthew

HVAC Technician

2,014 satisfied customers

14 years experience in the HVAC field of service, installation, Manual J & D calculations

Brian HVAC Guy

Brian HVAC Guy

HVAC Technician

1,029 satisfied customers

I have been an HVAC/R mechanic/technician for 30+ years.

Kenton Guidry

Kenton Guidry

HVAC Technician

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12 years install/service experience.

Tom

Tom

HVAC Technician

770 satisfied customers

16+yrs HVAC/R service. Residential Commerical Industrial

A-1 Tech

A-1 Tech

Service Manager

526 satisfied customers

I have been in the HVAC business for over 40 years.

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